Everything you need to know about successful trading and investing is on the web, gratis. There are no secrets. The rules of the game are known for each of the major market approaches – momentum, value and statistical arbitrage. Most people simply lack the discipline to follow the rules. There is a huge empathy gap between knowing something and actually applying it. It is just like the difference between knowing how to get in shape and doing it. It takes strong will and a desire to make it; it takes discipline.
Other than using a market method with proven positive expectancy, the only edge I have is discipline and it is more than enough. Diligently doing my homework and following my rules.