At some point in time the realization strikes that you are alone in the market – there is only you. The illusion that the market can ‘do’ anything to you falls away and it becomes obvious that you are 100% responsible for everything that happens to your account. You either give yourself money, or else you give your money away – there is nothing else.
The market is one of the few arenas where there are no external constraints, except in the case of a margin call. It never forces you to take a position, long or short, or tells you to get out of your position. It does not say how long to stay in a position or what time to exit, how much profit or loss is enough. There are no external constraints at all, and as such people run riot. You are relying on yourself 100% and there is only ever you to blame.
The above is a core part of a winning trading psychology, yet its difficult to adopt. Shifting the blame is a basic way we defend our ego every single day of the week – yet in the market this practice is absolutely unsupported by price action. How can any other market participant be doing something to you if he is totally unaware of your existence or what position you hold?
Its necessary to really ponder this until the truth of it shines out:
You are alone…
At some point in time the realization strikes that you are alone in the market – there is only you. The illusion that the market can ‘do’ anything to you falls away and it becomes obvious that you are 100% responsible for everything that happens to your account. You either give yourself money, or else you give your money away – 
Trading is a crucible of life: it distills, in a matter of minutes, the basic human challenge: the need to judge, plan, and seek values under conditions of risk and uncertainty. In mastering trading, we necessarily face and master ourselves. Very few arenas of life so immediately reward self-development–and punish its absence.