I am a bipolar rapid cycler so this sounds a lot like me. I can have two good days in a row and then be down for the next two. In a nutshell, I am unpredictable. You never know what you're going to get.

But it could be a combination of mood and environment too. My surroundings can make things worse for me. So for people like me, I don't do well in chaotic environments. I hate crowds, traffic, and loud environments in general and this can trigger some anger and depression.

My job (which I despise because it is so chaotic and demeaning) doesn't help and a feeling of being "trapped" or a failure makes it worse. I am looking for a new job with a renewed spirit so sometimes a change in job can be good.