Of course everyone loses in the market sometimes. Some lose many times. But then perseverance is the key. Learn from your mistakes and do not repeat the same mistake again. Think that if you were on the other side of trade then what you lost would have been your profit. There are unlimited opportunities in the market every trading day wether it is going up or down. As a trader one must learn to take advantage of those opportunities. I have lost too and that too during a raging bull phase. So someone must have won because for every loser there is a winner. It is a zero-sum game after all.