After over a decade of trying different trading strategies I have found the Investor's Business Daily style of investing to suit my personality. William O'Neil's teachings resound with the unmistakable honest to goodness ring of truth.
I buy many tickers in small lots. This allows me to buy/ sell stocks at-will. And, I sell winners and losers with equal certainty and resolve. I would rather miss getting the highest price than lose potential gains from hoping an up trend continues.