The legacy you’re worried about is mostly built out of Tuesdays.

Legacy sounds like it is made of big events and it is not. Whatever people end up saying about you comes from the texture of ordinary days: how you were in a bad mood, whether you answered, what you did when nobody was keeping track. Nobody has enough big moments to fill a reputation. The Tuesdays do all the work.

Stop waiting for an occasion to be the person you want to be, and pick one Tuesday behaviour instead. Answer messages the same day, talk to the person nobody talks to, finish the shift properly. Choose one of those and run it for a month.