I find I often have emotions without knowing why I have them, and I'm curious about how common this issue is. Although I realize TCS may not be the best sample, since 95% of TCS seems far more emotionally sick than average.
I often feel sad, angry, or even happy for no clear reason. If I think about it or talk about it, I can usually determine why, but it takes some effort. There are times when I'm entirely unaware of what I am feeling. Many times I have been talking to somebody who says I'm depressed, and that takes me by surprise. Then I come to realize that I am feeling depressed. My voice changes when I'm depressed, which is something others often notice before I do. Less commonly, people tell me I seem cheerful when I feel terrible, usually in a social situation where I'm supposed to be cheerful.