Scalping / Counter-Trend Trading

Here is a quote from a famous scalper Marty Schwartz,

"Most books on trading say that you only have to be right 3 or 4 times out of 10 if you cut your losses quickly and let your profits ride. That does not work for me. I cut my losses quickly, but I take my winners just as quickly. I need to be right 7 or 8 times out of 10" - Marty Schwartz, Pit Bull