"Wallowing In Misery"

The reason people often "wallow in their misery" is because all of the good things that will help them have been tainted by neglect and abuse.

Going outside regularly is good for you. Being Forced to go outside when you don't want to and being treated like you're stupid for not being super into nature is going to make you not believe that.

Exercise is good for you. Being told all of your feelings are "in your head" and exercise will get rid of any mental issue you have is going to make you not believe that.

Laying off technology is good for you. Being told by a parent that they wish they could break every piece of technology you own is going to make you not believe that.

You can't be mad at people who were force-fed poison and wonder why they aren't "trying to do better"