DEAR ABBY: I’m 29. I had a son six years ago and left my ex because he didn’t want to be a father. He chose to party instead. I had to file a name change for my son, and custody was hard to fight for because the father refused to show up. Since then, I’ve worked two and sometimes three jobs just to stay ahead. My child hardly sees me. I work so much that my son has stopped calling me “Mommy” and instead calls me by my name. I feel hopeless and that I’m working for nothing. Have I made ...