It seems that everyone has a reason why this trade was a LOSS. With hindsight, you can list any number of reasons and you're even right.
What many forget is the fact that losers are part of the business. If you can't lose, you are doomed to fail at trading. If you lose 10 or 20 trades in a row, then you should think about what you are doing wrong and how you can improve.
Skyold
EDIT: Follow your setup with discipline
