Project From Hell

I have a project on which I have worked since August. It’s not going my way at all. I’m at that pivotal point where I must surrender, but I don’t want to give up. A small part of what I proposed has been implemented and the rest, which requires team cooperation appears now to be completely impossible to attain. My boss is so kind to me. She wants to give me a new project to get my mind off the project that is going nowhere fast. I’m resisting moving on, hoping that I can turn the first project around. I have tried everything and nothing seems to work, because my clients don’t like this project at all. Nobody likes this project at all. It feels like a failure and I don’t want to have managed a failure. It is so depressing.