He shows up every day offering to buy or sell stocks at prices that can be overly optimistic or pessimistic. The idea is that investors should not let Mr. Market's mood swings influence their decisions.

Understand that Mr. Market can sometimes be rather irrational. Mr. Market can be depressed and names a very low price since he is terrified that you will unload your interest on him. The good thing is he doesn't mind being ignored. You don't have to say yes to every offer.

Remember that Mr. Market is there to serve you, not to guide you. You are free to ignore him or take advantage of him when he is in a foolish mood but it will be disastrous if you fall under his influence. Transactions are strictly at your option.

We can take what Marilyn Monroe said with regards to share price volatility, "I'm selfish, impatient and a little insecure. I make mistakes, I am out of control and at times hard to handle. But if you can't handle me at my worst, then you sure as hell don't deserve me at my best."