I worked at TMobile and had a similar story: I worked insane hours on projects, found myself sleeping at my desk way too much. The thing that was important in

I worked at TMobile and had a similar story: I worked insane hours on projects, found myself sleeping at my desk way too much. The thing that was important in my situation was that my working hours were becoming increasingly erratic, and a lot of my coworkers had no idea what I was working on. For instance, there were days when I'd come in at noon, put in four hours at my desk, then drive to the data center and work until three in the morning. So I was working about fourteen hours but it looked like I was working four. If you're working for a small company, people will probably be aware that you're burning the midnight oil. But if you're working for a large company, there's a lot of good reasons to be present at your desk from nine to five.