There is no perfection in trading as far as making money on every trade or having a perfect system. All you can hope to be perfect at, is following your system, rules, and trading plan. A winning trade should be measured as one in which you followed all your preset guidelines. Even the best traders only average about a 50%-60% win rate at best over long periods of time. The key is having bigger winners than losers, not being perfect. Like in baseball where a .300 hitter can get into the hall of fame. A .500 trader in the market can become wealthy if his wins outpace his losses.