Responsibility as a trader means a lot of different things. As a psychologist, I like to talk 
about being “responsible” for ones’ owns emotions – identifying and accepting them, and being responsible for our decisions. Too many traders blame the market or some unseen force that manipulates the market and causes their loss. Whether or not such unseen forces exist isn’t really the issue, or even the reason that keeps traders from making money. It’s a convenient excuse, but not much else.
A useful concept for traders is a concept known as Responsible Choice, defined as choices that create consequences for which you are willing to assume full responsibility. The phrase, “responsible choice” comes from Gary Zukav, a man who has covered a lot of ground in his life; former Special Forces officer in Vietnam, Harvard grad, wrote the best selling physics book, “The Dancing Wu Li Masters”, and now a consciousness expert. A friend of mine is very good friends with him.
Fully accepting whatever happens in a well-planned trade is the hallmark of a successful trader. A trader with a mind-set that operates with the concept of responsible choice will see loss simply as an unproductive trade, not as a personal attack. Moreover, they will see the loss as a learning opportunity, gathering market information from the loss and possibly adjusting their perspective on the market.
Using the framework of responsible choice, a trading loss is actually empowering. If a trader has difficulty accepting losses, or accepting whatever happens (e.g. not reaching target or overshooting target after the trade is closed) the psychological experience of empowerment is elusive and the trader will usually swing to the other side of the spectrum and become frustrated. Obviously, there is a lot more to be said about losses, I just wanted to point out the concept of responsible choice as a framework to be considered.