I enjoyed reading this article about seven things we can do to resist the self-help craze trap. I agree that anything carried too far is not good. I too have wanted a break from constantly thinking and ruminating on what I need to do to be better. Sometimes I just want to play a video game or have a drink and get goofy.
So please, yes, take breaks from "self-improvement" and "self-help". Don't take yourself or life too seriously or you might just miss having a life! Oh gosh... sorry... that's sort of starting to sound like help!
Here's the article with the seven helpful hints on avoid help.
https://www.psychologytoday.com/blog/stand-firm/201702/how-stand-firm-in-runaway-world