Firstly it seems like its time to take a break. When you disillusioned you need to stop for a bit. Perhaps do a while of "normal" work. Secondly I would advise

Firstly it seems like its time to take a break. When you disillusioned you need to stop for a bit. Perhaps do a while of "normal" work. Secondly I would advise a frank and in depth post mortem. Find out really what when wrong and when. Perhaps it was just bad luck but more likely there are mistakes you can learn from. "Each partners I meet seems too newbie to work with." This phrase stands out. Perhaps its just because your upset right now but generally when someone blames everyone else it means the problem lies with them.