Choosing to be miserable is an option, but not one I recommend.
The ego constantly competes with the spirit for control over your inner voice.
Love is the foundation from which your decisions about your life should be made.
Change is wonderful, and necessary.
Giving up represents a choice you make when you decide not to take action on something over which you actually do have control.
A big part of letting go is recognizing when it is time to stay in a situation and when it is time to move on.