Because youth is wasted on the young.
It's a good thing that you've tried all that, even those left unfinished. The next step is to apply the Pareto principle, and stop doing a bunch of things. Do the easiest thing with the most benefit. Do what makes you happy. Do more things outside the academic and business areas. Dabbling isn't a bad thing. Here are some suggestions I find worthwhile, in no particular order:
1. Sex.
2. Meet people, help people, make friends, make allies.
3. Travel.
4. Improve your body. A healthy mind needs a healthy body.
5. Teach yourself how to cook.
6. Read books. (don't be afraid of not finishing them)
7. Learn more about the rules that govern you. Quite boring but so very useful.
8. Become a minimalist. Sell your things and stop buying things you don't need. Simplifying is good.
9. Study and practice meditation.
10. Learn how to grow, collect or hunt food.
11. Explore altered states. Some do it with wine, some do it with poetry. Exercise, alcohol, herbs, plants, fungi, pharmaceuticals, music or plenty of other activities, they can all do the trick.
12. Conquer fears.
13. Swim in the ocean.
14. Lie on the beach.
15. Don't worry be happy.