I once read in a management book that to handle chronic complainers one should require them to have several options and a recommended solution before coming to complain again. The beauty of this approach is that it drastically cuts down on the amount of complainers, but especially that it helps to turn complainers into problem solvers.
It hit me one day that I could apply this principle to managing myself. It takes the emphasis off the why and the blame and puts it firmly on what can I do to solve my problem. In the end, blame was just another form of procrastination, another distraction that kept me from working on the actual solution.