Quote from Handle123:
I totally agree, I recently gave someone a method I use to trade Euro, he did very well the first week of real time trading, then he decided to add and take away parts of the method, right into the crapper after that. My method had been backtested over 10 years of data, I have the ability to stick to my set of rules. But any time I even consider changing anything, that means I have to backtest that change going back huge amounts of data.
I see over and over again, too many times traders scan a few weeks of data, saying they don't have the data to go back or they too knowledgeable and know it will work. If people just took part of what they lose in a year would pay for the data, learn how to code or grab a professor at a local college and ask to make one of his classes a school project on your coding, you pick up tab on the pizza party.
You make your money thru backtesting, then just stick to your plan. If you can't stick to your plans, try hypnotize.