Some of us can show you trading models with an positive expectancy number.
You can use a sample size of 100 trades, 30 minimum. There are a few consideration to this calculation. This is the easy part. There is much more to know about oneself and the system suitable for their personality.
Back testing and finding an expectancy number are not the same thing.
Not all systems need to be back tested.
If you have a system with a positive expectancy number, you will make money indefinitely unless the system is no longer applicable to current market conditions or the trader/investor becomes dysfunctional.
Not sure why you are persisting with the gambler tag?
