Maintaining a consistent sleep schedule, particularly when I'm in complete control of what I do each day. Just because I
can wake up whenever I want doesn't mean I
should.
Keeping track of time. I didn't get home until 6 last night because I was with former co-workers and interns playing Rock Band the whole time. Only, when we decided to stop, it felt to me like it was 1 or 2 at the latest!
Staying organized. I'm pretty good at creating organization, given the right tools, but it doesn't take long before I'm totally disorganized again!
And, to keep up with the recurring theme, I also suck at swimming. In fact, I can't swim at all.