Some depressions can be shorter, while others can last longer. You say you are not finding your doctor and therapy beneficial...are you currently taking any medication? It took a LONG time (about 2 years) to finally find a medication combo that worked for me. Patience is key if you are trying the medication route. Also, there are different types of therapy available...if you are not benefiting from one kind, perhaps you could suggest trying another? Just some thoughts that came to mind while reading your post.

I hope you find some moments of happiness during this tough time.