The first thing that you need to accept is losing. It's the common weakness of traders that either make them quit early or sell with more losses. Practice your mind and you will know that you can control your emotions if losses can't affect you anymore.
Accepting loosing and knowing the risk that you are willing to take is very important for traders , it means that you should endorse what could happen whenever you put any amount of money at stake . You should forget about number and focus more on strategies , mind set and risk management .
If you're going to be uncomfortable with your losses , you should minimize either the number of trades or the amount dedicating to trading each day .
If you're trading with the same amount of money in each deal , you won't be really safe from losses and the risk will be higher to loose your funds , for example if your first 3 trades input was 500$ and you lost it , your 4th trade shouldn't be 500$ but should be at max the half , if you keep loosing then you lower the amount and so on .
Before doing any trade you should ask yourself are you prepared to accept whatever risk you'll encounter and to be ready for a 50-50 chance . If you're going to get frustrated after each loss then you'd better stop trading ! And go for another business that doesn't get you as emotional as trading does .
But if you practice enough in such way that losses don't affect you anymore , and only your sense and brain are controlling your behavior , then only you'll be able to make good money out of trading .