Entered stock as per my check list at 9.35am. Two large red candles, the second one dropped 15 cents below my Stop/Loss. Got stubborn and decided to keep in the trade. Bad idea that could lead to a bad habit. Held trade until later in day and exited at 3.34pm total loss -$530. Lessons must quit losses quickly, must stay disciplined and follow rules to protect capital. Must admit that I was wrong, quit the trade and move on.