I've started studying computer science on my own. Plus also trying to learn math again. So spend a few hours each day on those if I can.
The rest I try to manage my home. Keep it organized and/or clean it.
I am a recovering internet user so still slip up on consuming garbage on YT or something.
I'm working on trying to eliminate inefficiencies like those. Although I don't think watching a movie or playing a game once in a while is bad. I just think you should earn it.