I think you miss the time to think about the direction. But it is the most important task compare with others. Your time allocation only focuses on execution. If one is heading to a wrong direction, it just accelerates the failure.
My time allocation is very general; the point is that a developer-entrepreneur will spend most of their time doing things other than coding.
(And I could argue that "finding customers" encompasses "the time to think about the direction". But I'm a shitty solo developer-entrepreneur, who's mostly trying to steer people like me in the right direction, which is to figure out how to find the right people to work with.)
