It is popular opinion sometimes that a trading strategy might no longer be effective if one begins to loose money while trading instead of gaining.
An important question i ask myself whenever i hear about people complaining or simply discussing a series of consecutive looses they have made while trading using a certain strategy is;
HOW MANY CONSECUTIVE LOOSES IN TRADING CAN YOU HANDLE BEFORE YOU ACCEPT THAT YOUR CURRENT TRADING STRATEGY IS BECOMING LESS EFFECTIVE?
for me it only took 2 or 3 days. if I experience consecutive losses I will stop trading for a few days and forget everything and then start again, in my opinion when I experience consecutive losses it is not my trading strategy that is wrong but my own emotions that I can't control because greed wants to take more profits to cause mistakes then cost me. for me the best way to deal with it is to stop trading for a few days and forget everything before starting again.