For many years my acting came from a place of surmounting some enormous obstacle, confronting some stern and faceless judge who would condemn me to a pit of hell if I didn't achieve the "zone," if even for a moment. Not a particularly happy place to work from.
If you want to be an actor and you love acting, you can do it whether you're doing something else or not. You can be connected with community theater or make your own little movies. But, if you want to be a movie star, you've got a tough road ahead of you.
Improvisation sometimes seemed more like jazz than acting, like verbal jazz, with the actors playing a theme back and forth, and then introducing another theme, incorporating it, somehow trying to work their way all together to a meaning of some kind, or at least a conclusion.