That's what I do too. I usually have about a dozen projects going at once. If I don't feel like one, I do another. I generally pause in big elaborate ones and do quicker charity quilts. As a teacher, one HAS to have global attention.
One time I had about 10 students all asking for attention at once. When I answered them all (Yes, no, this page, check the board, not now, etc) and returned to the one with a complex problem, her jaw had dropped. She could not believe that I remained unflappable and got everyone back to work so smoothly.