A GUIDED BOOK JOURNEY

Think Again

Adam Grant

30 days to build the habit of rethinking, and get comfortable being wrong.

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What you'll learn

The scientist mindset

Preachers defend, prosecutors attack, politicians campaign for approval. Scientists test their own beliefs like hypotheses and update when the evidence says to.

Confident humility

You can trust your ability to figure things out while doubting your current answer. That combination, not certainty, is what real confidence looks like.

The joy of being wrong

Finding out you were mistaken means you know more than you did yesterday. Treated that way, being wrong becomes something to look forward to.

Building a challenge network

Surround yourself with people who will push back on your thinking, not just people who agree with you.

Rethinking cycles

Beliefs and identities calcify unless something deliberately revisits them. Building in regular rethinking keeps you from getting stuck.

The 30-day arc

Four parts, thirty days, walked at your own pace.

Finding your mindset

Days 1–8

Notice your inner preacher

Catch yourself when you're trying to convince instead of explore.

Catch yourself prosecuting ideas

Notice when you're tearing down ideas rather than testing them.

Spot your approval seeking

See where you're seeking validation instead of truth.

Try on scientist thinking

Experiment with treating your beliefs as hypotheses to test.

Test one small belief

Pick something small you believe and actually examine it.

Ask what would change you

Identify what evidence would genuinely shift your thinking.

Track your mindset shifts

Look back at the moments you've already started thinking differently.

Choose curiosity over certainty

Practice choosing wonder over the need to be right.

Confident humility

Days 9–15

Trust your learning ability

Remind yourself you can figure things out as you go.

Doubt one current answer

Find one thing you're sure about and question it gently.

Name what you half know

Get honest about what you think you know but actually don't.

Practice saying I'm unsure

Try out the words that make space for not knowing.

Hold confidence and questions together

Discover you can be sure of yourself while staying open.

Build your figuring out muscle

Strengthen your ability to work through uncertainty.

Celebrate productive uncertainty

Notice what becomes possible when you don't need all the answers.

III

The joy of being wrong

Days 16–23

Find a recent mistake

Look for a time you got something wrong recently.

Name what you learned

Pull out the useful insight hidden in that mistake.

Spot an outdated belief

Find a belief that used to serve you but doesn't anymore.

Thank the new evidence

Appreciate the new information that's asking you to update.

Rewrite your mistake story

Reframe a past mistake as evidence of growth, not failure.

Share what you got wrong

Tell someone about a time you changed your mind.

Look for tomorrow's update

Start looking for where you'll learn something new tomorrow.

Make being wrong useful

Turn being wrong from a threat into a tool.

Building the network

Days 24–30

List your yes people

Notice who only agrees with you and never pushes back.

Find your best challengers

Identify the people who make your thinking sharper.

Invite someone to push back

Ask someone to disagree with you on something that matters.

Schedule your first rethink

Put the first rethinking session on your calendar.

Pick beliefs to revisit

Choose which beliefs deserve regular examination.

Set your rethinking rhythm

Design how often you'll check in on your own thinking.

Launch your next cycle

Set up your ongoing practice of staying intellectually flexible.