Thanks for asking Christie.

The "self help" domain is vast, you can write pretty much anything on self help from life lessons to mistakes from love to lust. But the thing is you should focus on one core sub domain. The broader your niche will be the more diffirent audience you will get.

let me give you som insights of self help sub domains.

1. life lessons for 20s people

2. better life for 40+ age people

3. productivity hacks for adults.

Did you get my points?

you can cover a one perticuler criteria (young old, student, online guy etc) and write about them. that's how you can more targeted followers.

Targeted followers > more views> more money.

I hope you understand.

Thanks for reading.