If you ask my 89-year-old great aunt, one of the major downfalls of living so long is that most of your close friends and family died years ago and you're all alone. Still, it's important to make new friends and stay in touch with distant ones, according to this article from Everyday Health. Maintaining relationships helps improve your quality of life as you grow older. It also helps ward off dementia and keeps you mentally sharp.

It's also important to engage in productive activities, whether you need to or not. These could include shopping, gardening, baking or any other chore, hobby or activity that you enjoy.

So, if you're retired, consider joining a club or taking up a hobby or activity that keep you busy and allows you to meet new people. You'll be happier and healthier for years to come.