I tried to do this with reading books by putting a kindle on my desk so that I would see that want to read (I did a lot of reading in high school and it was very enjoyable so I'm sure I'll still enjoy it).
But I just ended up ignoring the kindle and still continue to play mobile games on my phone or watch TV and movies on my laptop.
I agree with trashing things completely and I tried to do things like hiding the app store on my phone but I would still end up sometimes still opening the play store and installing a game.
But I can't get rid of my phone completely since I do need it for other work things.
I want to replace these bad activities with a better activity but it seems hard when I can just start playing a movie and get that instant dopamine without needing to do any work.