Maybe this is why index funds are good advice for most. As dumb as they are they tend to do the things humans can't stand doing and invest more in winners after the fact.

Do you buy NVIDIA after it has gone up and you missed the boat? Hard to do with an ego, but an index fund will do it with your monthly allocation.

Although index funds rely on other players in the market that actually think. They get the edge but following them a few hours later probably ain't bad.

I have a rule. Any pension-invested money has to stay in index funds.