Most of us go through the day with an enormous weight on our shoulders. Maybe during your commute, you start making mental lists of everything you need to do. "If I don’t get to work on time, I'll miss the team meeting, fall behind on my e-mails, and be forced to catch up all day." Maybe you’re trying to stand out and reach for a promotion, but nobody notices. Maybe you just have too much to do and not enough time.