Speaking of sleep, it's very important to get enough sleep (ideally 8 hours) when you're trying to lose weight. Now, I know after the first paragraph you're thinking, "who is this late night cookie eater to talk about losing weight?" Well, I'm a normal person who struggles when there is too much delicious temptation. But I know what I'm talking about.
So, to sum it up, get your sleep! And I'm so jealous of you if you can (although I wouldn't change my situation for anything).