Your little brother is watching how you handle hard things. That’s a legacy already in progress.

Younger people in your house learn what to do under pressure by watching rather than by being told. How you take a bad grade, whether you shout, what you do after losing; all of it gets absorbed as the normal way to respond. You are teaching whether or not you intend to. That is a real responsibility and it does not require being perfect at anything.

Let them see you handle something badly and then repair it, because that lesson beats a clean performance. Say out loud what you are doing and why. Being watched works better than being instructive.