I know the feeling of feeling good and then bam--all of a sudden it's gone. then you're on the verge of going backwards, having all the depression come right back. even when you're feeling good, it's still in the back of your mind, you wonder "is this temporary?"

there isn't always a reason why the down feelings come back. I think it's important to remember that the depression is temporary. keep up the good work with the exercise (take it easy in that department) and keep on keeping on. it is work to feel good, unfortunately. the more you are in the habit of feeling good, the easier it gets.

I hope you are feeling better today!