It's all we can do, after all we are MEN and, as such, are analytical creatures who must know the most logical course of action is to learn from every experience so as to gain knowledge and carry on with steadfast purpose and resolve. As one of my favorite actors, Tom Hanks said in the baseball movie, A League of Their Own: "Crying... There's NO CRYING in baseball!" As you appropriately state in your post we have to reevaluate; that's what the professionals do..