I usually feel like I've been productive if I spent most of the day in the zone - but the truth is, that doesn't always move things in the right direction. For

I usually feel like I've been productive if I spent most of the day in the zone - but the truth is, that doesn't always move things in the right direction. For instance, I might suddenly obsess over some little visual detail that I want to get just perfect and end up spending an entire day on it. At the time it feels right - but looking back later when the project is behind schedule and everyone's in crunch mode, I have to wonder if that was really a productive day or not...