What one needs is a simple system backtested on a period where the market has been quite volatile with a lot of ups and downs. One would be surprised to know that a system as simple as a Moving Average Cross over can make you money on a consistent basis. This is the small insignificant part. The most important part is discipline and money management. Easier said than done but if you have a simple system thouroughly backtested aong with a trading plan laced with money management rules you can and will be a very successful trader in the long run on a consistent basis.