Do affirmations work? An honest look at the evidence

Two very different things called “affirmation”

Much of the confusion comes from one word being used for two practices. In everyday language, an affirmation is a positive sentence you repeat to yourself, such as “I am confident” or “I am enough.” Researchers sometimes call these positive self-statements.

In psychology, though, most of the evidence comes from something called self-affirmation. In a typical study, people are asked to pick a value that matters to them (family, creativity, honesty, faith, humor) and write for a few minutes about why it is important. Nobody is asked to declare that they are wonderful. The point is to remind people that their sense of worth rests on more than the one thing currently feeling threatened.

Both practices aim to support a steadier sense of self, but they work differently, and the research on each says different things. Keeping them apart is the first step to a useful answer.

Do affirmations work? What the research says

For self-affirmation, the evidence is fairly encouraging. In a widely cited review in the Annual Review of Psychology, Geoffrey Cohen and David Sherman describe how brief values-writing exercises have been linked to less defensiveness, more openness to difficult information, and in some school and health settings, effects that lasted longer than expected. They are careful to add that the benefits depend on timing and context: the exercise tends to matter most when a person is under some kind of threat or pressure, and it is not a cure-all.

Brain imaging adds another piece. A study by Christopher Cascio and colleagues found that reflecting on personally important values, especially when thinking about the future, was associated with activity in brain regions linked to self-related processing and reward. That does not prove affirmations change lives, but it suggests that thinking about what matters to you is not neutral for the brain. It engages systems involved in how we value ourselves.

So in this narrower sense, yes, affirmations can work. They seem to give people a bit of psychological breathing room, which can make it easier to face a problem instead of avoiding it.

When positive self-statements can backfire

The picture is less rosy for the classic “repeat a glowing sentence” approach. In a well-known 2009 study in Psychological Science, Joanne Wood, Elaine Perunovic and John Lee asked participants to repeat the statement “I am a lovable person.” People with low self-esteem felt worse afterward, not better. Those with higher self-esteem felt only slightly better.

The likely reason is simple. When a sentence is far from what you currently believe, your mind argues back. Each repetition can become a small reminder of the gap between the words and how you actually feel. The same study found that people with low self-esteem fared better when they were allowed to hold negative thoughts alongside positive ones, rather than being pushed toward positivity alone.

This is worth knowing because the people most drawn to affirmations are often the ones who are struggling. If a sentence makes you feel like a fraud, that is not a personal failure. It is a sign the wording needs to change.

What seems to make the difference

Putting the research together, a few patterns stand out. None of them is a guarantee, but they help explain why the same practice helps one person and frustrates another.

• Believability matters more than intensity. “I am learning to trust my judgment” is easier to accept than “I am completely fearless.”
• Values often work better than verdicts. Reflecting on what you care about tends to steady people more than declaring what you are.
• Timing helps. An affirmation before a stressful moment (an exam, a hard conversation, a medical appointment) may be more useful than a random one.
• Honesty about feelings counts. Sentences that leave room for difficulty, such as “This is hard, and I can take one step,” avoid the inner argument.
• Small actions anchor words. An affirmation linked to a concrete next step is less likely to stay abstract.

How to try affirmations in an honest way

If you want to test this for yourself, treat it as a small experiment rather than a promise. Choose one value or area of life that matters to you right now, and write a sentence that you can say without wincing. Read it once in the morning or before a moment you find difficult, then notice how it lands.

After a week, check in. Does the sentence feel supportive, neutral or false? Adjust the wording until it feels like something a kind friend might say to you. Some people find it helps to keep a short list of sentences that worked and return to them on harder days; in Positive 365 you can save those to your favorites and set a gentle reminder for the time of day that suits you.

Affirmations are a reflection tool, not a treatment. If low mood, anxiety or self-criticism is persistent or getting in the way of daily life, speaking with a doctor, counselor or other qualified professional is a better next step than searching for the perfect sentence.