Have to versous want to

When I want to do something I’ll do it without anyone having to tell me, and when I’m told to do something i don’t do it until they keep telling me and telling me and than I do it once I see that there botherd. For example in one of my classes  we had a substitute teacher I got bored and wrote on the desk the next day that same substitute tells me to clean it off and if I don’t do it he’ll write down my name, as class is in session he kept on telling me to do it but I just payed no attention to him, until he just looses it he tells me how my teacher is going to hear about this, he never did anything he was just all talk. But now when I was in one of my other classes I also wrote on the desk so I’m just like I didn’t like the way it came out so I erased it and didn’t do it again no fighting, no yelling just me doing it on my own.