Work, school, and everything in between keeps us pretty busy—so much so, that sometimes we run out of the house with our shirts on backwards, our headphones misplaced, and our computers running all day long. While I can't help you with the first two problems, I can definitely give you advice on how to make sure you never leave your computer on when you're not using it. You know you can easily schedule your Mac to not only shut down, restart, or go to sleep at a certain time, but also turn o...