There are some people who age gracefully. They embrace getting older in a dignified way, so dignified that you don't really notice until you're invited to their 60th birthday and you're like, HOLY SHIT, HE IS OLD. These people are the best case scenarios. These are the Diane Keatons and Robert Redfords of aging.
And, on the other side of the coin, there are people who age horribly. As my father would say, "time has not been their friend." But we're not just talking looks—which is where age tends to show up first—we're also talking about behavior.
You can pick the person who's terrifed of growing older out of the crowd quickly. It's the woman dressing like a 20-year-old and embarassing her adult children. It's the ridiculous old man tooling around in a new convertible with his ludicrously young girlfriend. These are the Kris Jenners and Donald Trumps of aging.
And for those people, we have this How to Age Book ($12, The School of Life). The perfect retirement gift, 60th birthday gift, or maybe we should just all send a copy to Donald Trump. Each and every one of us.