It’s 2 AM and you’re still working… are you really getting that much work done? Don’t you have to be up again at 7 AM to start it all over? And I have a feeling you’ll still be working on that same project in the morning. Is that extra hour of work right now really going to help you tomorrow when you’re running on 5 hours of sleep? That $6 triple shot of espresso can only help so much. I know from doing a few too many late nights myself that at some point, they will break you and you need rest. Figuring out the right balance of those late nights and early mornings is tricky. For your own sanity and for the sanity of the ones you work with, treat yourself to some ME time. Find some time just for yourself; to relax, unwind and power back up. Doing so will allow you to be more productive when it’s time to get back to work. So shut it down, you can always pick it back up tomorrow.