Do affirmations work? What the research shows, and how to use them well

Two different things called “affirmations”

Part of the confusion about whether affirmations work comes from the fact that the word covers two quite different practices.

1. Positive self-statements

This is what most people mean online: a short sentence you repeat, such as “I am confident” or “money flows to me easily.” You say it aloud, write it, or listen to it. The idea is that repeating it changes how you think and feel about yourself.

2. Self-affirmation (values affirmation)

This is the research technique. Instead of repeating a statement, people reflect or write about something that matters to them, such as a personal value, a relationship or a role. A common exercise is to choose a value from a list and write for several minutes about why it is important. The point is to remind people of what they are, beyond a specific threat or failure, so that a setback feels less like a verdict on their whole self.

Most of the positive research findings belong to the second kind. Most of the cautionary findings belong to the first. When you read that “studies show affirmations work,” it is worth checking which one the study tested.

What the research on self-affirmation shows

Self-affirmation has been studied for decades. In a major review, Geoffrey Cohen and David Sherman (2014) summarized work showing that brief affirmation exercises can buffer people against threats to their self-image, and can improve outcomes in areas such as health, relationships and education, though the effects depend on the context. The review also notes that results are not uniform, and the studies below show why.

Stress response

In a laboratory experiment with 85 participants, J. David Creswell and colleagues (2005) found that people who reflected on their personal values before a stress task showed lower cortisol responses than a control group. Psychological stress also varied with personal resources such as self-esteem and optimism. It was a single lab experiment, so it shows a possibility, not a guarantee for daily life.

Health behavior

A meta-analysis by Tracy Epton and colleagues (2015) pooled 144 experimental tests of self-affirmation in health settings. Affirmation had small but reliable positive effects on how readily people accepted health messages, on their intentions to change, and on later behavior. The effect on subsequent behavior was the largest of the three, and it was still modest. These were mostly one-time exercises in studies designed to test the technique, not people repeating phrases at home.

School performance: a promising result that did not always repeat

In a study by Cohen and colleagues (2006), seventh graders spent about 15 minutes writing about a value that mattered to them. African American students who did this earned higher grades afterward than those in a control group, and the researchers saw no such effect for European American students. That finding drew a lot of attention. Later, a large replication by Paul Hanselman and colleagues (2017), using the same procedure in the same setting, found no evidence of effects. The authors suggested that self-affirmation may be fragile when rolled out widely in schools.

The honest summary: values-based self-affirmation can have real effects under some conditions, the effects are usually small, and they do not always replicate.

What the research on positive self-statements shows

The most-cited study on repeating positive statements is by Joanne Wood, W. Q. Elaine Perunovic and John Lee (2009). They worked with the sentence “I am a lovable person,” testing people who had higher or lower self-esteem.

• In a survey, many people reported using positive self-statements and finding them helpful, though people with low self-esteem were more likely to say they sometimes made them feel worse.
• In an experiment, participants repeated the statement while writing down their thoughts. Those with high self-esteem felt somewhat better afterward. Those with low self-esteem felt worse than people who had not repeated it.
• In a follow-up, people with low self-esteem who thought about both the ways the statement was true and the ways it was not felt better than those who focused only on how it was true.

The researchers’ interpretation, in plain terms, is that a sentence that clashes with what you believe invites your mind to argue back. If you already doubt your lovability, “I am lovable” can highlight the gap between the claim and your view of yourself.

What this study does not say

It does not say that affirmations always backfire. It tested one sentence in a short laboratory session, with student participants, and measured mood right afterward. It also does not show that a gentler wording would fail. What it does give you is a design rule: be careful with sweeping claims that you do not believe, especially on days when you feel low.

What affirmations cannot do

This matters on a manifestation site, so here it is plainly. There is no evidence that repeating a sentence changes external events: that it brings a partner, creates money or makes a particular job offer appear. If someone tells you that affirmations will attract an outcome by themselves, they are making a claim the research does not support. The does manifestation work? page covers this in more depth.

Affirmations also are not a treatment for depression, anxiety, trauma or any medical condition. They can be a small supportive habit alongside real care. If your mood is low for weeks, if your worry feels out of control, or if you have thoughts of harming yourself, please talk to a doctor or therapist, or contact local emergency services or a crisis line. Kaizen is a personal-development tool, not therapy.

Finally, affirmations are not a replacement for fixing real problems. “I am safe and respected at work” does not change a toxic workplace. Sometimes the most self-affirming act is to make a plan, set a boundary or leave. For the risk of using positive talk to avoid hard feelings, see manifestation and toxic positivity.

So what can affirmations do?

Taking the evidence and the experience of people who use them together, here are the reasonable benefits, labeled by how well supported they are.

The row about attention and routine is a reasoned claim, not a research finding about affirmations. A short morning practice gives you a regular moment to decide what matters and what you will do, and many people find that valuable whatever the mechanism.

When affirmations help and when they backfire

From the studies above and from basic common sense, a few patterns emerge.

They are more likely to help when

• The words are believable to you, at least partly.
• They connect to your values or to something you actually do, such as “I keep my promises to myself.”
• You write them in your own words, not borrowed ones.
• You treat them as a prompt for action, not a spell.
• You are feeling steady enough to hold the idea lightly.

They are more likely to backfire when

• The claim is extreme or sounds like a lie: “I am perfect,” “I am a millionaire.”
• You are already feeling low and the line highlights how far you feel from it.
• You use them to push down real feelings instead of acknowledging them.
• You treat each repetition as a test, and feel worse when nothing changes.
• You say them while avoiding a practical problem that needs attention.

This is a reasonable inference from the evidence, not a settled law. If an affirmation makes you feel worse, stop using that one and try a softer version below.

How to write affirmations that you can believe

Writing is the main skill. Four moves handle most problems.

1. Use a bridge

Bridges like “I am learning to,” “I am becoming,” “I am open to” or “I can choose to” move a sentence from a claim into a direction. They fit well with Wood’s finding that people with low self-esteem fare better when they can admit the statement is not entirely true yet.

2. Make it specific and small

A line about something concrete is easier to believe than a line about your whole identity. Wood has suggested that specific, modest statements may work better than sweeping ones, though that idea has not been tested directly.

3. Anchor it in something you do

“I follow through on what matters to me” is easier to say after you have just done something you said you would.

4. Name the value, not just the outcome

“I care about being a good friend” is steadier than “people always like me.”

Before and after rewrites

For ready-made lists, see all affirmations, self-love, confidence, and morning affirmations. If you want a custom set, try the affirmation generator.

A values affirmation exercise you can try today

The research technique is simple enough to do on your own. It is a reflective writing exercise, not a magic trick, and the studies used a short session. Treat it as a way to feel more grounded before something stressful.

Do this before a hard conversation, an exam or a day you expect to be stressful. This is a lighter, safer starting point than repeating flattering phrases, and it needs no belief in anything beyond the fact that you know what you care about.

How often, how long and in what form?

You will find advice online to repeat affirmations a specific number of times, at a specific hour, in front of a mirror. None of these formats have been shown to work better than another, so choose what you will actually do.

A simple pattern

• Morning (2 to 5 minutes): Read or say two or three lines that match your day. Read each slowly and notice your reaction.
• At a stress point: Use one short line, such as “I can handle this one step at a time,” before a meeting or a difficult task.
• Evening (optional): Write one sentence about something you did that matched your values.

Spoken, written or listened to?

There is no good comparison to tell you. Writing slows you down and makes you choose words. Speaking aloud can feel more natural for some people and awkward for others. Listening to a recording of your own voice is a popular option; see record affirmations in your own voice for how to do it, with the caveat that research on its effect is thin. Subliminal audio is a separate claim, discussed on the subliminal affirmations page.

How many at once?

Two or three is plenty. More than that and each line gets rushed. Rotate them weekly or when they stop feeling alive.

How long until you notice anything?

No one knows, and anyone who gives a precise number is guessing. A practical test is to check in after two to three weeks: do you feel steadier on the days you do it, and are you doing more of what you said mattered? If not, change the wording or the approach.

Pairing affirmations with action

The most reliable thing you can do to make an affirmation “work” is to connect it with a behavior. Peter Gollwitzer and Paschal Sheeran’s (2006) meta-analysis found that if-then plans help people carry out their intentions. An affirmation sets a direction; an if-then plan makes it happen.

If you want to go deeper on the beliefs behind your lines, the limiting beliefs page and the limiting belief reframer help you find the thought an affirmation needs to speak to. For a longer-form version of the practice, scripting turns a line into a whole scene.

Troubleshooting: if this happens, try this

I feel silly or fake saying them

That is a sign the line is too big. Add a bridge (“I am learning to…”) or make it about an action. Or start with the values exercise above, where you do not have to claim anything.

They make me feel worse

Stop that line. Consistent with the Wood research, try a version that admits difficulty: “This is hard, and I can take one small step.” If you find that most positive self-talk stings, that is worth mentioning to a therapist, who can help with the underlying beliefs.

I forget to do them

Attach them to an existing habit, like making coffee or brushing your teeth. Keep the practice small: one line is better than a ten-minute routine you drop after a week.

Nothing is changing

Look at your actions. Affirmations are a prompt; the change comes from what you do next. See manifestation not working for a longer checklist.

I want something more personal

Generic lists are fine for starting, but lines that come from your own situation tend to feel more believable. In Kaizen, the morning affirmations are written from your own journal (your goals, doubts and wins) instead of a stock library, which is one way to get closer to that. A notebook and a few honest sentences do the same job.