DEAR ABBY: I retired after a 40-year career. A friend from work, “Bernie,” is the same age I am (62) but is still working. Six years ago, I had a serious health crisis. Three years ago, Bernie survived a heart attack. Since then, Bernie worries incessantly about dying. He exercises rigorously and eats a strictly vegan diet. I like to spend time with him, but I’m more casual about diet and exercise. Neither of us is going to be a GQ model, regardless of how much we diet or exercise. I say life should be enjoyed, but Bernie is too ...