Advice: Reduce Angst Buying or Selling Stocks

Someone that I know invests in stocks, and he does really well.

However, he says that the stock market tends to drive him nuts.

He told me about a time that he heard something about a sudden event on the radio, and the first thing he thought to himself was, "I wonder how this will affect the price of XYZ stock."

The second thing he thought to himself is that he's going absolutely NUTS. The event had NOTHING to do with his stock. He was just THAT consumed with his stock.

He asked for some advice on how to avoid that emotionally fueled angst he gets every time he's in the stock market.

Here is what I wrote to him...........