I typically have no problem falling asleep, however i often wake up between 4 and 4:30 am and can't go back to sleep. any suggestions?

Sleep disturbance: There are sleep disorder clinics or specialists that can help you avoid depending upon sleeping pills. In the meantime, avoid eating for 2 hours before bedtime, avoiding caffeine after the morning, avoid exercising in the evening,avoid alcoholic beverages later at night which put you to sleep only to awaken in a few hours when the alcohol wears off.