If you feel that you have been unfairly treated, demand justice.
What happened? You were doing so well, moving along nicely, when all of a sudden life threw an obstacle your way and you crumbled. Why did you give up? When a home burns down, the first thing people do is hunt through the remains to find things that are worth saving. Have you done this? Look again, gather what can be rescued, and you'll soon find your hope returning.
One of the most common missing ingredients in our working lives is curiosity. If you aren't curious, then you're probably not learning. And if you aren't learning, then you're probably feeling as if you are standing still or on auto-pilot. Get curious.