Don’t start working on hard, stressful activities—be they mental or physical—after dinner. If you struggle with a racing mind, try inserting a brief mindfulness meditation session prior to bed. When you feel yourself getting drowsy, don’t fight it. Whatever you are doing can wait until the morning. Keep your room as dark as possible. If feasible, consider black-out blinds. Keep your smartphone OUT of the bedroom entirely. Not on silent. Out. •Try taking a nap of 10 to 30 minutes to help restore energy and focus if you hit a mid-afternoon lull.