What powerfull lesson or story did you hear from old people?

An old man that I used to talk to when I was still drinking and going to the bar became my friend. And he once told me to enjoy my youth and my drinking while I could because when I got older my hangovers were gonna be more brutal and that they’d start to last longer. And he also said that for me to stop playing with this girls heart because she really loved me and that I was going to lose her if I didn’t!!!