We are designed to sleep in the night, in the dark. Messing with that schedule by sleeping in or staying up too late can dramatically influence your moods. One of the first things a (good) doctor might suggest is to fix your sleep schedule.

Whats your sleep hygeine like? A good bedtime routine can really help us wind down for the night. And going outside into the light every morning, do you have a dark or light house? Does natural light wake you up? Theses are all things to think about, plus much more but I dont want to overwhelm you with suggestions.