Yes, this is an active process. You are the only one who can do the work. Nothing is going to magically get better. If you aren't willing to do the hard work ahead of you then this isn't going to work.
Read the book. Set your goals. Remember that you cannot control anything but yourself. Make your goals about you and what you can do to improve yourself.
Think about this - are you the same person now that your H fell in love with? If you looked at yourself objectively, are you a person any man would want to have as a partner?
If you love somebody, set them free. http://tinyurl.com/2empx2g