This is the only self help book that ever actually helped me.

Also there was one about habit forming that focused heavily on the power of compounding returns in terms of habits. Cant remember the name, if anyone can help me out, but that one was great too

The Compound Effect by Darren Hardy?

Thats the one, thank you!

Preach! "Atomic Habits" is the only self-help book that I can recommend for everyone regardless of their particular life circumstances.

Wanted to buy an audio book, but some reviews there suggest that printed version is better. Will audio book work?

I highly recommend at least the e-book for reviewing the material and exercises.

Each chapter itself also has embedded review points and notes.

It could "work" in audiobook form, but I think doing the exercises would be more challenging.

I’ll echo this, I found Atomic Habits to be one of the only self help books whose strategies I actually use on a daily basis. Required a lot of work but I really improved myself after first reading this book.

Although I don’t agree with everything the author says (particularly his unrelated political views) I use Scott Adams’s “systems beat goals” idea (from “How to Fail at Almost Everything and Still Win Big”) almost every day.