I feel that it is quite a natural thing to look for the excuses, we do it all the time when we fail consiously or subconcsiously. Our goal here like in every aspect of trading is to listen to your common sense rather than emotions and feelings. Whem the deal turns out to be a failure I immediately start feeling that the world is unfair to me and all this stuff, however, it lasts only for several minutes as later on the brain takes initiative and I begin to analyze my trading and find out mistakes which I've made. I think that all people realise that the analysis of your past trading is the key to success as only improving your trading can bring the benefits, but not all of the people manage to act accordingly.