A choice made once is a decision. Made every day, it starts becoming a personality.

Repetition turns an action into an identity, and it happens without any announcement. Doing something once is a thing you did, and doing it daily for a year is who people understand you to be, including you. That works in both directions: the practice you keep and the habit you keep both become descriptions of you.

Pick one small repeated thing you would like to be true about you and do it daily for a month. Keep it small enough that a bad day cannot break it. Then look at one you would rather not have, and change the daily version rather than the story.