Re: why
Its very hard to explain how you feel to other people when you dont know yourself, I am almost afraid to have a good time as I know its nearly always followed by a major depression. Recently I apologised to my wife because I know Im awful when I get "black dog" but I cant tell her why or even what triggered it, I always have a feeling that Im losing control and I hate it. Dont ever feel silly trying to put into words whats is ailing you because personally I find just expressing it even on a forum helps and as I did you will find that its not something you did or you alone are suffering theres lots of us and we all find different ways to cope.
Going back to being busy, its an indication of how a lot of these issues are literaly "in your mind". I suffer horrible palpataions and ectopics, various pains etc etc etc but funnily enough when Im busy I forget to feel ill. Its only when I stop and have time to let my mind wander that I feel poorly again. All the advice is easy but focus on good stuff and try not to get down about the other rubbish, you will feel better soon - good luck
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Success is not final, failure is not fatal: it is the courage to continue that counts.
Winston Churchill