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What to Write in a Good Luck Card

Priya Anand · Words & Sentiment Editor
Published · 4 min read

Most good luck cards add pressure while trying to remove it. Here is how to write one that does the opposite, plus one thing you can suggest that has research behind it.

Key takeaways
  • Do not tell them they will definitely do well. That is a prediction they now have to meet.
  • Say what you think of them, not what you think will happen. Character is verifiable, outcome is not.
  • Name what happens afterward. It quietly frames the day as one that ends.
  • One researched suggestion that genuinely helps: ten minutes of writing down your worries before a high pressure exam.
  • Break a leg belongs to the stage and nowhere else, and its earliest clear print appearance is a 1939 memoir.

Almost every good luck card makes the same well-meant mistake. It predicts success.

You are going to smash it. I know you will get it. You are definitely going to pass.

The sender means: I believe in you. The reader, at eleven o'clock the night before, hears: here is one more person who will be disappointed. A confident prediction is a small weight, and the person receiving it is already carrying several.

Write about them, not about the outcome

The fix is one move. Say what you think of the person rather than what you think will happen.

I have watched you work at this for eight months and I have never seen you take anything that seriously. That is a fact, it is verifiable, and nothing tomorrow can make it untrue.

Compare it to you will be brilliant, which is a guess that tomorrow may contradict.

This is the whole technique and it works for exams, interviews, auditions, surgery and every other version of a big day.

Name what happens afterward

The second most useful thing in a good luck card, and almost nobody includes it.

Call me when it is done and I want the whole thing. Or, coming for dinner Thursday whatever happens.

That single sentence quietly reframes the day as one that ends. When somebody is inside a piece of anxiety, the future beyond it becomes hard to picture, and a card that puts something concrete on the far side of it is genuinely helpful in a way encouragement is not.

The tip worth passing on

There is one piece of research here specific enough to be worth telling somebody, and it is about exams.

Work by Ramirez and Beilock at the University of Chicago found that spending about ten minutes writing down worries immediately before a high-pressure exam improved performance for students who were highly test-anxious. In their study those students averaged around a B plus, compared with a B minus for those who did not write. In laboratory conditions, participants under pressure who had not written dropped around 12 percent in accuracy, while those who had gained about 5 percent.

That is a real, cheap, actionable thing to put in a card: ten minutes before you go in, write down everything you are worried about. Get it out of your head and onto a page.

It is far more useful than good luck, and almost nobody knows it.

By occasion

For an exam, keep it short and add the writing tip. Also mention food, which sounds mundane and is the thing people forget. There is more in good luck gift for exams.

For an interview, remind them that they are also assessing the employer. It is true, it is easy to forget, and it changes posture.

For an audition, break a leg is the phrase, and it belongs to theater rather than to life generally. Its earliest clear appearance in print is Edna Ferber's memoir of 1939, and it was barely known outside the profession until the 1950s. The likeliest origin is the German Hals und Beinbruch, carried into American theater by German and Yiddish speaking immigrants after the First World War, rather than any of the more colorful stories.

For surgery, avoid luck language altogether. Thinking of you tomorrow, and I will be at the end of the phone all day. Nothing about outcomes, nothing about bravery. What to write in a get well card covers the days afterward.

For a driving test, keep it light and say explicitly that failing is normal and boring. That is the single most useful thing anybody can say to somebody taking one.

What not to write

Anything that mentions how much this matters. They know.

Anything about how proud you will be, which attaches your pride to their result.

Any story about how you failed the same thing and it worked out fine, told the night before. Save it for afterward, where it is genuinely comforting, rather than before, where it reads as pre-emptive consolation.

And no jokes about how much they have not revised, however funny they were in September.

How long it should be

Three sentences. Four at most.

A long good luck card is a paradox: the more you write, the more the occasion appears to weigh, and the reader is looking for evidence about how much this matters. Brevity communicates calm, which is the thing you are actually trying to transmit.

The exception is a card that will be read afterward rather than before, where length is fine, because the pressure is off and there is time.

If you find yourself on the second side of a card the night before somebody's exam, you are writing it for yourself. That is allowed, and it is worth knowing which one you are doing.

Afterward matters more

The card that arrives after the result is the one people remember, particularly when it did not go well, and hardly anybody sends it.

If it went badly: that is a hard result and I am sorry. It does not change anything I said before, which was about you and not about the mark. Still on for Thursday.

For gifts, good luck gift ideas. The what to write hub has the rest of the occasions.

Frequently asked questions

What do you write in a good luck card?

Say what you think of the person rather than what you think will happen. Naming something verifiable, like how hard you have watched them work, is better than predicting success, which is a guess tomorrow may contradict and one more expectation for them to carry.

What should you not say in a good luck card?

Do not predict success, do not mention how much it matters because they know, and do not attach your pride to their result. Save the story about how you failed the same thing for afterward, where it comforts, rather than before, where it reads as pre-emptive consolation.

Is there anything that genuinely helps before an exam?

Yes. Research by Ramirez and Beilock at the University of Chicago found that around ten minutes of writing down worries immediately before a high-pressure exam improved performance for highly test-anxious students, who averaged about a B plus against a B minus for those who did not write.

Where does break a leg come from?

Its earliest clear appearance in print is Edna Ferber memoir of 1939, and it was barely known outside the theater profession until the 1950s. The likeliest origin is the German Hals und Beinbruch, brought into American theater by German and Yiddish speaking immigrants after the First World War.

What do you write to someone before surgery?

Avoid luck language entirely. Thinking of you tomorrow, and I will be at the end of the phone all day, is enough. Nothing about outcomes and nothing about how brave they are, which puts them in a role they did not ask for.

Accuracy checked by June Calloway, Managing Editor, on August 7, 2026. How we write and check our guides →