moving on

There is a principle called "radical acceptance" an it is taught to people who may be suffering from any sort of depression or grief. It is the point at which you realize that there is nothing you can do to change anything about a situation and the decision is made to just accept that and go on. There is no process of "closure," no analysis of the whys and wherefores; one simply accepts that it is that way and chooses to turn in a different direction.

The catch phrase for this technique is:

The only way out of Hell, is radical acceptance.