I'm just curious how others experience changes in mood. For example this morning I was in a relatively good mood, feeling content. Then I felt my mood shift to sad. I was aware of the shift and tried to stop it but was unsuccessful. I'm not always this aware but it felt like a switch was turned in my brain. Literally I started to pour a cup of tea and in that time I became sad and experienced negative (degrading) thoughts. Usually I feel a trigger or a mood coming on but this was more of an immediate flip. Has anyone else experienced this?