Grumpiness and old age; does it have to be?

Not if you don't want it to!  Getting grumpier as you get older can be an easy habit to fall into, but not one that helps you much.  With some self-awareness and a bit of effort, life can be more enjoyable for yourself and those around you.  This article has some good reminders and tips on how to do that:

If you want to be a more pleasant person as you get older, say goodbye to these 10 behaviors