I would usually spend some hours of each day in the studio working on material. It depends what it is and whether there are time pressures. For example, working on other people’s material there is typically some sort of deadline or at least a sense of responsibility to focus and get the job done. With my own material I am more likely to live with things and see how much I feel they are worthy. Therein lies the problem, it has to be said, (and I didn’t fail to pick up on your subtle hint). As regards the last part of your question, I find that if I don’t pursue some level of creative output I begin to feel low in myself, it’s therefore fair to say that I feel compelled to work for my own well-being and state-of-mind.