I think there are three approaches to any task: Avoidance, Halfheartedness, and Obsession. I am starting to believe that only the first and the third are of any use. I am not convinced that there is anything in between being half-hearted and being obsessed. 3/4-hearted still does not cross over into obsession, and so should be eschewed.
Avoidance and obsession are really two sides of the same coin. If you’re obsessed, you’re avoiding everything else. I suppose the trick is to be obsessed with the right things at the right times.