Dear Amy: I am the youngest of three siblings. I’m in my 60’s. To avoid conflicts with my older sister, “Ann,” I will say “good idea,” but will do things my way, anyway. We live on opposite sides of the country and don’t get along. My husband and I have a good, happy marriage. Ann’s marriage is not always as happy, so she may be jealous. Her husband, “Bill,” and my husband have become very good friends. Last year, Bill sold a business.