I read that as "you can't sleep/eat because the fact that you're not working on your idea bothers you so much". A bit like how you might have been totally nervo

I read that as "you can't sleep/eat because the fact that you're not working on your idea bothers you so much". A bit like how you might have been totally nervous the first time you asked someone out on a date, so much so that you were unable to eat or sleep. However, once you're in a committed relationship with the person that nervousness goes away. Of course, that's just my reading and I don't know how that stacks up with what Microsoft intended to communicate or what others will read into it.