Is this one of the symptoms of depression? One second I'll be near rock bottom, feeling absolutely devastated and that nothing in the world could possibly help me and then a few moments later I feel motivated, excited, like the world is my oyster. This doesn't happen all the time, but on days that it does, it continues all day. It makes me feel crazy. A few months ago, I was SO angry that I threw a pair of scissors at the wall (one of the very few times I've actually lost control of my anger) and then after standing and shaking for a few moments, I started cracking up. My mom said it freaked her out because she honestly thought I was losing my mind. Has anyone else experienced something similar?