Report Card
Are you brave enough to ask your wife for a report card on how you're doing? It's a sobering thought, but why not give it a go and get some feedback on things you might improve.
You could list items such as:
Attentiveness to my wife
Attentiveness to my children
Work/life balance
Quickness to forgive
Handles conflict well
Is respectful and courteous always
You can also add specific things that you'd like some feedback on. If you want to get fancy, type this up as a real report card and provide blanks for additional comments.
Good luck. And don't be defensive when you get the results. Just say thank you and get to work on the items that you want to change.