Has America learned from its mistakes from the financial crisis? An article in The Wall Street Journal outlines six lessons people should have gleaned from the financial crisis, including ignoring Wall Street’s optimistic forecasts and debt is dangerous.

Simple is beautiful:  

Probably nothing is more dangerous than investing in assets, or strategies, that you don't really understand.

Cash isn’t trash:

Again, look to the master, Warren Buffett. He was loaded with cash and was able to buy up bargain stocks amid the panic. All investors need to hold cash (and equivalents, such as short-term Treasury bonds) in their portfolios.