Things I know at 31 that would have changed my life at 21:

 Adopt these principles and you'll thank yourself for doing so sooner than you think.

I hope you find them valuable.

1. Stop buying dumb shit. If you do, make it rare and inexpensive.

2. Life isn't fair. Stop trying to make it fair. Make it unfair to your advantages instead.

3. Your employer does not care about you. If you can make money elsewhere, do it.

4. Introverts aren't anti-social, they just hate drama, stupidity, and fake people.

5. Invest early and often so work becomes optional sooner.

6. Successful people aren't special. 99% of them just never gave up.

7. Alcohol has 0 benefit. It makes you poorer, dumber, and fatter.

8. There is little value in caring about things you cannot control.

9. Accountability and maturity are the same thing.

10. Avoid high interest debt at all costs.

11. A sheep who drives a Mercedes to the slaughterhouse is still a sheep.

12. 9-5 jobs are inefficient income sources. Start an online side hustle ASAP.

13. "Escaping" on a vacation does not relieve stress. Doing work you enjoy does.

14. Making Monday your favorite day of the week is the key to happiness.

15. Start exercising and never stop. It's the best form of therapy on earth.

16. Take (smart) risks. Never doing so promises you will die with regret.

17. Stop drinking and eating so much sugar. It's why most people are overweight.

18. Being "busy" isn't a flex. It's just admitting your schedule controls you.

19. Ignoring the internet as an income source is like going to the gym to watch TV.

20. Most college degrees are terrible investments.

21. Talk is cheap. Results are the only things that matter.

22. Avoid people who don't read or care about learning new things.