To gain control over the quality of experience, one needs to learn how to build enjoyment into what happens day in, day out.
It does not seem to be true that work necessarily needs to be unpleasant. It may always have to be hard, or at least harder than doing nothing at all. But there is ample evidence that work can be enjoyable, and that indeed, it is often the most enjoyable part of life.
If you do anything well, it becomes enjoyable. To keep enjoying something, you need to increase its complexity.
Music is usually resorted to as a form of self-therapy when you?re not involved enough in what you?re doing so that part of your mind needs to be distracted from what otherwise would become boring.