Rule #1: Keep it Simple. When you choose a forex day trading strategy, make sure you understand every aspect of the strategy. Many currency trading systems rely on reading and interpreting data before making a decision to enter or exit the forex market. If you can't read these charts or decipher them, choose a simpler strategy. Forex day trading can be profitable even at small amounts, if you have a clear understanding of your forex day trading system and you implement it correctly.