Only a finite number of mistakes you can make:1. We can sell too early2. We can buy too late3. We can hold too long4. We can buy too soonResearch is not enough. We are human beings first and investors second. It goes against human nature to find some titillating information and do nothing. Theres room for all of us as long as we forge a strategy thats consistent with whom we are. Acknowledge our limitations and make the most of what comes naturally.Bargain hunter value investorThe Visionary growth stocksContrarian turnaroundsSentimentalist enduring franchisesSkeptic short-salesThe Trader (keep any short-term trades/short-term opportunities separate from long-term investments)The Adventurist speculationsThe author stated that you can get surprisingly far simply by mastering the basics. What that says, in a roundabout way, is that you dont need to know a whole lot about investments because your method of operation will determine the results, or heavily weight the results. His trading/investment record is missing, so I dont think the author mastered the basics like a lot of people that love to talk about stocks and investments but they cant get their investments to provide for them. Ill narrow down the field to what the author missed, your results are almost exclusively determined by how long you hold the stock, so that, if your objective is to buy and then sell at a higher price in the market, when you sell is of far greater importance than when you buy.