Module 12 · Resilience, purpose & growth · Emerging evidence

Identity and behaviour

What you do shapes who you believe you are — and that belief shapes what you do next.

7 min read · Level: Intermediate · Free — no account needed to read

The idea

What you do shapes who you believe you are, and who you believe you are shapes what you do. Someone who goes for a walk most days starts to see themselves as “someone who walks”; someone who sees themselves that way is more likely to walk on a rainy day.

Psychologists have long observed that people partly infer their identity from their own behaviour. Small, repeated actions are like votes for a certain kind of person. Over time, the identity makes the behaviour feel natural rather than forced.

This works best gently. Identity can motivate — “I’m someone who looks after my health” — but it can also trap: “I’m just not a sporty person”, “I’ve always been anxious”. Noticing the identities you hold, and whether they help you, is part of growth.

Why it works

Changing behaviour is easier when it fits who you believe you are — and small actions are how that belief changes.

A real example

The situation

Tomasz has always said, “I’m not a reader.” He wants to read more but feels it isn’t him.

What happened

He reads ten pages every night for two months. Somewhere along the way he starts saying, “I’m reading a great book at the moment.” By the end of the year he has read twelve books and thinks of himself as a reader.

The takeaway

Each night’s ten pages was a small vote for a new identity.

Use this when you are…

• you want a change to feel like “you”
• an old identity is holding you back
• building a long-term habit

Common mistakes

• Holding on to limiting identities like “I’m just not…”.
• Adopting an identity without any actions to back it up.
• Using identity to judge yourself harshly when you slip.

What the evidence says

Emerging evidence: Early or mixed research looks promising, but it is too soon to be confident. Treat it as worth trying, not proven.

Theories about how behaviour shapes self-perception have long histories in psychology, and some studies suggest identity-based framing can influence behaviour. Evidence for identity-based habit change specifically is still limited.

Where this comes from: Habit formation research; Self-efficacy research.

Fields that study this: Clinical psychology, Behavioural science.

Try it now: Cast a small vote

1. Finish the sentence: “I want to be someone who…”.
2. Choose one tiny action that such a person would do.
3. Do it today as a vote for that identity.

Practise with a guided technique

• The two-minute start — (2 min · Practical evidence)
• Values check — (10 min · Moderate evidence)

Questions to think about

• What identity do you hold that might be limiting you?
• What kind of person do you want your actions to vote for?

Try this today

Do one small action today that votes for who you want to be.

Afterwards, ask yourself

How do your repeated actions shape how you see yourself?

Words in this lesson

• Habit — A behaviour that has become automatic through repetition in a stable context, so a cue triggers it with little thought.
• Self-efficacy — Your belief that you can do something. It grows most from actually doing it.