16: What you only think you know can definitely hurt you -- and cause you to lose a lot of money in the market.

The reality is most of us do not consistently make excellent financial choices on our own, in a vacuum. Part of the problem is that we're plagued by misconceptions around money and the market, and we act on faulty information.

Start to solve this problem by educating yourself on the real deal and understand what's really going on when we talk about things like diversification, index funds, the S&P 500, portfolio performance, and more...

...including what might be the biggest misconception of them all: that you definitely know what you're doing and make great financial decisions all the time.