You know how your mom always told you to "get a good night's sleep--everything will be better in the morning?" Turns out, once again, she was right. According to behavioral scientist Dan Ariely, author of "Predictably Irrational" and "The Upside of Irrationality," the time when we are capable of working most successfully toward achieving our goals is right after we wake up. So if you're reading this before 9 a.m., close this window and go back to your work. If not, venture below and check out what Ariely has to say about time management.