I'm a retired Life and Health Coach and I've found some books are helpful for some people. I've also read so many that IMHO were a waste of paper.

If you choose to use a self-help book, I suggest you consider it a workbook, not a book to read. Plan on journaling, plan on taking time to creating systems, trying them, failing, creating a new system, trying it, and finding the pieces that work for you.

A lot of people do better when they have accountability when trying to make changes or reach a goal. That's why joining groups that have similar goals works for a lot of people. Others need to do research and understand why the goal is important to make changes.

I spent a lot of time stying why some people seem to be able to make changes easily while others seem so resistant. I study a lot of personality frameworks, DISC, Meyers Briggs, Human Design, and many others. The one I found most useful for me as a Coach was The Four Tendencies by Gretchen Rubin, she created a framework around how people respond to expectations, both interior and exterior. Knowing which of the 4 Tendencies was dominant in my clients allowed me to guide them to set up the systems that worked best for them.