Suggest Treatment For Depression

Question: Hi, Two years ago, at the age of 22, after a long struggle with depression (since childhood) I finally sought medical help and went to see a counsellor who sent me to psychologist. I was diagnosed with clinical depression and given nexito 20mg prescription along with CBT by that doc. I was not able to take up the CBT due to having too much college work. I did take the meds, and stopped going to my sessions with the doctors as I felt I was getting better. On my own, one day (after six or seven months of taking the meds) I stopped taking them without consulting the doctor. It has been one and a half years since and I have been doing pretty good. But now, I'm facing a lot of stress and setbacks in life (nothing major but still) and it is really effecting my mood. For the past few months I have had mood swings, and now they are becoming more serious day by day. I feel very depressed and negative at night, and cry for hours. I am very insecure and doubt myself and my abilities all the time. I start thinking I need to see a shrink again. But the very next morning though, I feel completely okay, even great. I feel like I can conquer the world and I feel a huge surge of energy even though I have barely slept. I feel like I don't need any doc or meds and with excercise and keeping myself busy with my new projects I can be happy. Things that made me feel so depressed the night before hardly seem to matter now (such as a loved one moving to a different country, failure to get the job I want). I just need suggestions on what I should do, think or believe in? Which part of me is the real, reasonable person??? HELP!