What's some life advice you wish you had known 10 to 15 years ago?

Mine would be comparison is the thief of joy. I used to compare myself a lot to my best friend because she is really tall and model like. And although I too had model like features, I am short and knew I would never get a lot of work like she would because of it.

But now that I'm older I am content and happy with my height and wish I had just still went for it then while I was young and in my prime.
What's some life advice you wish you had known 10 to 15 years ago?
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