basically, every kind of gambling or 'investment' need to find a way bet to get biggest profit. And most important is not to greedy. Otherwise, you will easily lost not only the profit and capital too. I also got the same experience in the stock market. Last year, I read a book about using statistical method trace the changing point of a stock. After I read through this book, I created a simple excel program to trace some target stock. After a month of trace, I got some target stock, like the 2600(@4.20), 2628(@5.3), 941(@28.5)...... I tried to buy the warrant of those stock and one by one at the very beginning. I get around 60-80% of profit in 2-3 weeks after each buying. Then later, I become greedy again, tried to buy serveral in the same time. However, because of limited floating capital. Some of the need to sell with lost before the changing point coming. l lost again ( all profit and capital ). The most significant case was a 2600 warrant ( should be 4500). As I need to get back the cash to pay for the loan and credit card. I sold it and then next day it rise 300%. I origianlly can get big win in this warrant but I was too greedy and bet too much to put me into dead end.
So remember.......follow the rule , don't be greedy
