I believe most people have some intrinsic idea about what should be, and what shouldn't be. They might not state it, or be aware of it. It's just that they have this image of how the world should be.
-what friends should be
-what job they are doing should be
-what a relationship should be
-what their hobbies should be
And so they get this idea in their head of who they wanna be. Most people are bad at being self aware so their whole lives they just go along melding with this idea of theirs. But this is simply an idea innit, a "false self", if you will. Self-deceptive.
Change the idea and you're someone else now.
Where am I going with all this?
There are certain experiences in life that simply shake this melded image to it's core. The reality that what should be has no rational basis and is something that can just randomly happen or not, hits the person hard in the face.
This is where it gets funny. Can I accept this?
Nah -> delusion.
Yeah -> progress.
At least that's normal. But what happens with a yeah of this sort.
"The world is wrong and not how it should be" .
Well this can be depressing or motivating. If it's motivating, it would obviously push the person to try to change the world. Simply because their willpower to adhere by their "should" is strong.