I suppose the downside is that I have the tendency to go back over my life and re-plan it or re-imagine it, or just re-gret a lot of things! But the upside is that this is the way a creative mind works, I think. You write something down, a musical phrase and you immediately start thinking, "or it could go this way..." If you come up with enough "ors" and put them in the right order, you might have a whole piece of music. Aren't the Diabelli Variations by Beethoven just a collection of inspired "ors" on a rather plain theme? Didn't Beethoven imagine all the alternate ways the theme might be written? All the "ors"?
I've put that piece up before, but what the heck, let's hear it again. Here is Grigory Sokolov playing the Diabelli Variations by Beethoven, live, and we even have the score: