If your living arrangements permit it, get a dog or cat. When I was 72 and my old dog had just died, and I was unwell and my husband had Alzheimer’s, I got a new puppy. Yes, a puppy. I knew I needed something to give me a reason to get up in the morning. She has been with me through my meningioma and stroke, my broken hip, my husband’s decline from Alzheimer’s and his Covid death as well as my sister’s declining health. And when she dies, if I am still in my right mind, I’ll get another dog, a small one this time which I can take with me to an assisted living facility.