At first I didn't think I was that into this book, but then I found myself thinking about what I'd read quite a lot & talking with other people about it and thinking about how to apply her tips to the things I'm working on.

This isn't a one-size-fits-all, "here's how to form a habit" manual. It's more about understanding and working with your personality type, getting clarity about what you value and how your habits do or do not reflect that, and being aware of what may help or undermine you.

I especially enjoyed these sections:
the problem with rewards and goals (hint: you quit)
treat yo'self (self-care rather than rewards)
Abstainers vs Moderators (which are you?)
Convenience (making good habits convenient and bad habits inconvenient)