Hi dolphin. Our moods don't necessarily need to be triggered by anything. For me 60% of managing the illness comes from taking my medication the other 40% comes from eating well, exercising, therapy, etc.

I know it's hard, but when I'm depressed I just force myself to continue with my routine. Going to the gym, work, the stables etc. I find if I don't the depression becomes worse. You may also want to start tracking your mood. I use this online one: http://www.medhelp.org/land/mood-tracker