In fact that it should be like in philosophy of Reason over emotion. Trading is a game. When you play a game you can lose or the opposite. The dependency of being the top or the being one of the successful one is being determined on the duration of your stay in the game. Just like in trading where it is expected for us to lose sometimes in our trades, setting aside the price behavior of unstable currencies, but it is part of our learning curve to further sustain or survive in the market as a player not just in our investments where we gamble but also in trading. Knowing your reason in the market rather than going and playing inside the market without any sense of reason could help you keep yourself heads up in the market, as you will psychologically think that the losses isn't getting into your head leading you to such careless decisions.