As we age, we grow increasingly fearful of death, or more precisely, of having our existence erased from the world.

Live long enough, and everything changes.

When you're young, methods matter. You need to know what you're doing. If the Tang Monk had set out north instead of west, he never would have reached the Thunderclap Monastery.

In middle age, don't get complacent. Just because you've achieved consistent profitability or think you're unstoppable doesn't mean you should start making reckless decisions and瞎 investing—only to end up buried in debt.

In old age, don't become senile. Phrases like "reign forever, unite the world, enjoy eternal bliss, live as long as heaven itself"—those are all empty scams. The same tricks that big shots used to pull on you when you were young will be turned around and used on you once you become the big shot.

You only move on to the next stage's problems after surviving the current one. In investing, it's about timing, not price.

People change. When you're young, death is far away—or rather, you can't even spot it through a telescope—and you act one way. But as you age, your body declines, and you gradually become aware of death creeping closer, you become someone entirely different.

Most people won't truly understand that human nature shifts across the timeline of life until they're well into their eighties—and by then, it's often too late to do anything about it.