For many, one rule is all you need for financial investing

Income-generating assets beat price-guessing ones. Anything that brings you joy and has practical use is better than having nothing.

When you don't know how to invest at all, you're just betting on up or down. Sure, winning feels great—but what if you lose? Doesn't it hurt? If the asset still has use value, you can console yourself by saying, "Well, I at least got to drive a car." But if it has no use value at all, then who are you going to cry to?

The more complex something is, the harder it becomes for someone else to handle. As you age, you could pass away at any moment. If that happens and your kids can't take over, it easily turns into a messy disaster.

Most mature traders end up in this state: plain, simple, and boring.