Some people get like a seasonal depression. Winter is always the worst for me. The depression gets so bad and the isolation and desperation. There are good days, or even a few good hours. Moods can change very quickly though and there are times when things are going great and you stop for a second just to breath and the mood changes. Sometimes without a trigger. Just sitting down cause a mood change from fun and exciting to sad and angry.

I have to agree with above. They cycles aren't perfect, nor are they predictable. You can't see them coming and they do spring up over night.

There are definitely morning during the ups when you feel like you can take on the whole damn world. Anyone or anything that tries to stop it will be dealt with in a harsh and unforgiving manner.