I was a WAW at one time years ago. Presently I'm a LBS, so have a feel for both sides.
Coming to this site shows a lot about you. It shows that despite all the years of your H showing a deaf ear, waiting until you're running on empty & then handling it the way almost all of us initially did w/pursuing until you're totally annoyed, you think enough to investigate B/F throwing in the towel.
It also shows how much you care about your DD(4).
Please don't go anywhere before you read some of the posts here. You'll find many central themes & excellent resources to give you a basis for your ultimate path.