I think there are more nuggets of wisdom in great fiction than these self help books.
Maybe if someone put together a list of fiction books that correlate strongly with self-help categories, it would be immensely useful.
A great fiction book helps you vicariously experience a character's life while self-help is an instruction manual which sadly does not provide the same form of connection.
Haruki Murakami's entire body of work is basically self-therapy[1] and personally I feel it's been very therapeutic. The Wind-Up Bird Chronicle is an excellent place to start.
[1]: https://bloomsburyliterarystudiesblog.com/2022/02/i-always-s...