Rich isn't smart, it's calm

The thesis of Morgan Housel's «The Psychology of Money» is that financial success is not a hard science but a soft skill: how you behave matters more than how much you know.

Housel opens with a real case: Ronald Read, a Vermont janitor and gas-station attendant who died with more than eight million dollars. He had no secret formulas; he had decades of consistency, modest spending and zero panic in the downturns.

Translated into euros: you don't need to predict the market, you need to stay inside it. Save even when you have no specific reason to, leave room for error, and don't touch what you've invested when everyone is screaming. The return you can hold on to for twenty years is worth more than the spectacular one you abandon in two.