I want to share with you a simple insight that I just gained as a trader. It is actually one of the fundamental concepts that every professional trader lives by. It is the concept of following your trading plan. Building a solid trading plan is the most important part of being a trader. New traders commonly fail because 1) they trade outside of their trading plan, or 2) their trading planned is flawed. I noticed that one of my biggest leaks was making random plays outside of my trading plan.
If you are acting on impulse and trading untested strategies, it is highly probably that your going to lose. Even if your play has positive expected value, it has to have enough EV to outweigh the transaction costs. Think of this way, when you make an impulsive play you are basically making the statement that your untested strategy is profitable enough to beat the transaction costs. Trading is about finding re-occurring patterns where you can extract a profit. If it is a profitable strategy, the situation will re-occur. So, take it slow and build on the information that you gained.
If you are acting on impulse and trading untested strategies, it is highly probably that your going to lose. Even if your play has positive expected value, it has to have enough EV to outweigh the transaction costs. Think of this way, when you make an impulsive play you are basically making the statement that your untested strategy is profitable enough to beat the transaction costs. Trading is about finding re-occurring patterns where you can extract a profit. If it is a profitable strategy, the situation will re-occur. So, take it slow and build on the information that you gained.