The book is clear and pragmatic about it's approach to habit formation. It explains each step, and gives good examples on how to apply in your life, while recognizing reality and challenges we all face.

If you are only going to read one, I would recommend Atomic Habits over Charles Duhigg's Power of Habits. If you are going to read both, read Duhigg's first and then this book, the author wrote it and mentions the earlier book.