Man, I just go back from a 24-hour comic jam, my first one ever, and I must say this:
It has completely transformed how I think about how I work. Completely and utterly.
Rather than hemming and hawing over "I can't get it, boo hoo" like I (and many others out there, I know) tend to do, you're all like "AAAAH MUTHERFUCKER, FINISH FINISH FINISH IT'S FOUR AM AND MY ARM IS BROKEN"
So. TLDR; 24-hour comics undid my thinking in an awesome way. I suggest, if you haven't done one, to do it yourself.