A few people spoke to me about how bad my mood was in this post and to be quite honest, they had a right to be worried because I was worried myself.
Being in a bad mood for a long period makes you feel helpless. Being in such a bad mood that you can't enjoy anything and are crying several times in a day is scary. It's a complete loss of control. Perhaps it's my academic, thoughtful nature, but I am not used to being out of control of my emotions to such a large extent. I understand myself fairly well and if I'm in a bad mood I can say that I won't be in it forever and have a pretty good guess at what has upset me and what will cheer me up.
I'm scared of mental illness, perhaps more than physical disability, because it would knock my confidence entirely, exactly at the moment when I would need a bit of self-confidence to get me back on my feet. The idea that I could not reason properly is scary, and a change in personality is even scarier. A person whose personality changes may as well be a different person, and will certainly be treated as such. What I value in life is happiness, and mental health is a direct path to happiness, whereas physical health can only be an indirect path. After all, there are plenty of ill people who are happy, and healthy people who are unhappy.
After my little episode I feel like I am recovering. 2010 has been a reasonably good year for the first few weeks, but as you can guess, I have lost a bit of confidence and am not ready to put myself in difficult situations until I become more confident again. I'm happy but always looking around for signs that another metaphorical earthquake could hit and I could be unhappy again as I was before. I think I'm on the way out now and I'm feeling pretty good. Thanks for all y'all who got in contact and let me talk at you about my problems. It helped