Human beings can alter their lives by altering their attitudes of mind.

Attitude is not a coat of paint over the facts; it decides which facts you act on. Two people can be handed the same week and spend it differently, because one is scanning for what can be moved and the other has already settled that nothing can. None of that makes a hard situation fair, and it will not undo what was done to you.

Where it helps is the next step. Ask what you would try if you assumed some part of this were workable, then test the smallest piece. That usually costs less than the resignation did.