I once had a portfolio of stocks that had doubled in value right in front of me, but I didn't take profits. Only after it was halved and wiped out did I realize my mistake and regret it deeply. There's nothing more painful than this. If God could give me another chance at a bull market, I would shout three words about the 24-year bull market: Cash out now! If I had to put a "time limit," I hope it would be… "Not a single penny" left!