40 Life Lessons I Know at 40 (That I Wish I Knew at 20)

Today is my 40th birthday.

When I turned 30 a decade ago, I wrote an article sharing life lessons to survive your 20s and crowd-sourced advice on how to excel in your 30s. And apparently you guys loved it.

So, here’s more of the good stuff: 40 life lessons I now know at 40 that I wish I knew at 20.

Dig in.

1. Your relationship with others is a direct reflection of your relationship with yourself

If you treat yourself poorly, then you will also unconsciously seek out and tolerate others who treat...