More context: http://blog.eventvue.com/post/372936164/post-mortem
I bet you would've burnt out if you hadn't and Torbit wouldn't have happened, even if you had the idea or bandwidth for it. I've flirted with the crispy edge of burnout a bunch of times since moving to SF. You haven't really been working hard unless you've at least once seriously considered chucking it all to become a forest ranger, surf instructor or dog walker.