Why not start with a hug and the statement that you know you are horrible toward her and feel ashamed of it. Then each day when you wake up try to think of one thing you can do to make her life easier and better. Whether it's doing the laundry or changing the bedding or vacuuming the rugs.
Make up your mind to do this one thing for her sake and in time you will start to change inside.
Actions speak louder than words. Help her out around the house, be useful etc.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.