DEAR ABBY: My husband, “Doug,” and I have had a long and happy marriage. We’ve raised two children, both of whom are doing well in life. I have much to be thankful for, but I keep having to remind myself of that because I’m having trouble adjusting to my changing relationship with my husband. We have a grandson. The boy has become the focus of my husband’s world. Because of that, Doug no longer wants to do things with me. He says he has too much to do or he is too tired to go out, so I go to social ...