Just finished summarizing and exchanging ideas with @The Miraculous Trader Cola, and I realized what I personally like is essentially just three core strategies:

1. Horizontal: Asset allocation, using long positions for hedging as much as possible;

2. Vertical: Explore the upstream and downstream, find the risk-return node that best suits you (or, of course, find the scarcest point).

3. Price: Try to understand whether the purchase price is reasonable. Buying is more important than selling.

That's it.

If I must add one more: Investing is only a very small part of life. Don't let the act of making money from investments itself take up too much energy. The world is vast, and life can be more interesting. Investing should be a helper in your life, not a burden.