" Loss aversion in all of its forms perhaps causes more damage among investors than any other group. Loss aversion is the reason investors sit in cash, despite knowing full well that they are purposefully and willfully losing the purchasing power of their money. The average money market yield has been well below inflation for decades. Despite that fact, investors are willingly losing a little each day to avoid potential losses with real investments. With a plan like this, purchasing power can be cut in half in just 24 years! "

― , The 5 Mistakes Every Investor Makes and How to Avoid Them: Getting Investing Right