Resolve that you would sell a stock that you have bought as soon as it goes up enough to give you a gain of 5%. More importantly, you would sell what you have bought the moment it drops to the point where it is giving you 5% loss. Stick to it: in case the stock moves favorably, profit from each trade: 5%, if it moves adversely, loss from any given trade: 5%, nothing more, nothing less. And be sure to continue to plough back the gains for a period of three months. To carry on successfully, you need just 6 winning trades out of 10 in every quarter. That is, if you make 10 trades over a period of three months and end up losing 5% in four of them while gaining 5% in the remaining six, you stand to get a return of 40 percent per year on your investment which is a fairly good return to say the least. Even if you trim this figure by a significant 35% to provide room for practical difficulties in achieving all the mentioned numerical targets in stipulated time, still you end up gaining a fairly reasonable annual return of above 25%.
To excel in this line of business, it is worthwhile to study the careers of the masters who have generated considerable wealth from this trade, like Benjamin Graham, Warren Buffet, Peter Lynch, George Soros, Jesse Livermore, Bernard Baruch and so on. One should learn from one's own mistakes in investing in light of the experience of these star performers.