Welcome, sorry you are here. Read the book, don't let your W read it or see this forum. The book is for YOU not for her.
It looks like YOU know what You did or did not do in your M to get you where you are. It's good that you are trying to show your W that you are the man that she married.
What's bad is you changed once then let yourself fall back into old habits. Your W saw that and now she thinks your changes won't last.
read the sitches on this board. A lot of us are in the same boat. There are some good people on here with good advice. Read as much on this board as you can.