I feel I am a failure... Is that an emotion?

I can't hold a relationship together and now I am going back to see my T. I am back where I was 6 months ago. Sadness, loneliness, dispair all in my head and my heart again.
The only technique that I can think of to get through this again is to push myself foward and date as much as I can. Possibly that is really not going to be the best option.