I can't be mad at myself for not doing one passion of mine when I'm doing something in the other, especially when the two cross-over. If you find yourself in a similar situation, remind yourself that you're still doing it, and you can always change focus again when the time and calling require it.
What is it you want out of life? Forty years from now or next week? As I write this, I want a bacon cheeseburger and to perform on a resident Second City stage someday. Both are possible -- one clearly easier to attain.