I think it would actually be harder to quit than steroids. I can't imagine being in some lucid state where you could solve almost any problem and then having to come back to down to some foggy haze where you can barely comprehend anything.

Vernor Vinge wrote about something called "Focus" in A Deepness in the Sky which explores that concept. People voluntarily become "focused" so they can have extreme concentration to solve difficult problems, but at the cost of neglecting everything else.