That feeling of not wanting to stop, while responsible for most of my noteworthy accomplishments, scares a lot of people. I have had several people who have tried to "fix" me because they decided that me being up most of hte night finishing something was unhealthy. They never seem to understand the idea of ramp up time, nor do they seem to understand the fickle mistress inspiration. There was one guy, a kind of mentor to me, who tried to tell me it was a moral imperitive to get up early and get to work, to show the bosses I cared. For some reason staying late didn't show the same thing, particularly if i took advantage of the flex time and showed up around noon. Fortunately this guy was not my boss, and instead I get to be productive in the way that fits me best. Fortunately this guy broke off the mentorship after I got promoted in spite of my "terrible scheduling habits".