You may want to spend less time analyzing complex problems and just sleep on it.
Ap Dijksterhuis and other researchers at the University of Amsterdam offer this somewhat surprising advice: fight the temptation to read through the proposals one last time, and don’t run any more numbers. Their studies suggest that you actually may make a better decision by putting the proposals aside, doing an anagram puzzle, and following your intuition.
Not only were study participants more satisfied with the decisions they reached that way, but independent evaluators also rated their choices as better on average than the choices of those who consciously deliberated to the last second. These efforts were apparent, however, only for complex problems with many interconnected issues, such as choosing a new home.
But if your problem does require more mental horespower here are: