Day 2 Hatha Yoga Happiness: Today's focus is on the importance of having enough energy to feel happy. Are you getting enough sleep? Research suggests that many people in the US suffer from sleep deprivation and it's probably a worldwide phenomenon. Be sure to get your zzzz's. At least 7 hours is recommended (I know I need at least 8 hours). If you're not getting enough sleep, start going to bed 30 minutes earlier every night until you get your optimum amount.