The biggest mistake investors make is to believe that what happened in the recent past is likely to persist. They assume that something that was a good investment in the recent past is still a good investment. Typically, high past returns simply imply that an asset has become more expensive and is a poorer, not better, investment.
Ray DalioWhat I'm trying to say is that for the average investor, what I would encourage them to do is to understand there's inflation and growth - it can go higher and lower - and to have four different portfolios essentially that make up your total portfolio that gets you balanced.
Ray DalioRemember that experience creates internalization. Doing things repeatedly leads to internalization, which produces a quality of understanding that is generally vastly superior to intellectualized learning.
Ray Dalio