What advice would your 80-year-old self give you?
1. Enjoy your body
2. Enjoy your mind
3. Enjoy sex
4. Enjoy your money
5. Enjoy your youth, and don't worry about getting older
6. "Losers always whine about their best. Winners go home and fuck the prom queen."
7. Love yourself more
8. Your worries and regrets unnecessarily decrease your happiness, and you'll look back realizing you wasted precious time and energy on them
And you know this already! You even wrote a list about what I would eventually tell you and you included this in it.
9. Enjoy where you are
You read this on a T-shirt once.