here's the advice I'd give past me.

If you're 10–20: These are prime years!

Go deep on things. Become an expert.

try to go deep on multiple things.

One of the main things you should try to achieve by age 20 is some sense for which kinds of things you enjoy doing. This probably won't change a lot throughout your life

To the extent that you enjoy working hard, do. Subject to that constraint, it's not clear that the returns to effort ever diminish substantially.

Make friends over the internet with people who are great at things you're interested in. The internet is one of the biggest advantages you have over prior generations. Leverage it.

Aim to read a lot.

don't make the mistake of judging your success based on your current peer group.

Get good at making a good first impression, being funny (if possible... this author still working on it...), speaking publicly.

A large fraction of what people around you believe is mistaken. Internalize this and practice coming up with your own worldview.

Heuristic: do your friends at school think your path is a bit strange? If not, maybe it's too normal.

Figure out a way to travel to San Francisco and to meet other people who've moved there to pursue their dreams. Why San Francisco? San Francisco is the Schelling point for high-openness, smart, energetic, optimistic people.