Hello, Coupe-chic!
Here you say you are feeling good for a "minute" and then the next "minute" you feel depressed, yes? Are these actual 60-second minutes or do the good and low periods last longer, and, if so, how long? When you "feel good," how long does that good feeling last? What are you like when you are "feeling good"? And when you feel low, how long do those times last, longer than the good stretches? When did this roller coastering between good times and low times start, or has this been going on all your life?

Please do not feel obligated to answer my questions here. Based on your post, I suspect a therapist might want to know the answers to those questions. Here you are free to complain and rant and cry and just plain be unhappy. In much of the world those may be annoyances, but here they - and you - are welcome.