Second I would recommend analyzing really well what caused the situation. Rarely is the answer running out of money the real reason. In my case the best way I found to deal with this is to give talks in my ecosystem on why my startup failed. This way it gave me a better chance to figure things properly because I had to explain them.
Third I would not recommend things such as Elance or Odesk, but rather direct consulting with people. I have done this personally and the financial payback from direct consulting is incomparably better then online marketplaces of services. The bottom line is that in direct consulting people are looking for your expertise while on Elance they are looking for code and we as software engineers produce code but what we sell is the expertise (ie the code is only the means to the end). Fourth for your motivation levels I would recommend forming a sporting habit. Personally I run long distances and I find it helps me stay "earthed". On the really off days I find reading science fiction is quite helpful but that is just me. Finally I would like to point our that your startup has only failed if you do not see the rewards at the end of the journey and only focus on that you missed your goal. As an example Columbus failed to reach India by a new route. If he had only focused on that he would have never gone back with the fact that he had discovered the Americas.