Yes, your wife knows you...better than anyone else. That is why these changes need to be for you ..FROM you. Read and learn from us vets. But if the changes aren't real, and you don't feel them too, it will become a ploy to win her back. She WILL see right through that.
No one here can tell you what to change. Only you can do that. What are her complaints? What was it that didn't fit her life with you? Those are the questions that YOU need to answer. Be true to yourself, and address the things that she complained about. And I'm also sure that there are things that you didn't like as well. Use this time in your life to find yourself too. Face your fears....do something that you have always wanted to do.
What greater gift could you possibly give another than the oppurtunity to just completely find and be themselves?
Be the change that you want to see in her....but be real in doing so. This is hard, but in time, and I think I speak for all of us here, I will not do this again....but I would NOT trade what I have learned for anything.....
I picked up a quote a friend of mine used a while back.( thanks Jim ) Shut Up...God is trying to bless you.....