Sometimes it takes a lot of tries to get the med that's going to work for you so please don't give up yet. There's also counseling and even ect so you haven't exhausted the possibilities.
I don't know if you would find anything useful in it, but a book called the Upward Spiral helped me and my daughter climb out of some really dark places (along eith ghd right meds and a great counselor). You might give it a try. No one thing--just a group of small steps that together helped lift us up.
Sending positive thoughts your way