If You Can: How Millennials Can Get Rich Slowly

by William J. Bernstein

The real purpose of learning financial history is to give you the courage to do the selling at high prices and the buying at low ones mandated by the discipline of sticking to a fixed stock/bond allocation.

Act as if every broker, insurance salesman, mutual fund salesperson, and financial advisor you encounter is a hardened criminal, and stick to low-cost index funds, and you’ll do just fine.