DEAR ABBY : I am a 66-year-old woman who has worked full-time for 47 years, in addition to raising two children and maintaining a home. I will be retiring in three months because, honestly, I’m tired of the rat race. I’m single and don’t have a boyfriend. I have plenty of friends and family, but I’m increasingly nervous about what I’ll do with my spare time. I know I should feel happy and grateful that I’m able to retire, but at the same time, I’m having anxiety over this freedom. Have you any