I manage to maintain a 70% win rate with my trades by sticking to the three P's
"Patience, Prudence, and Persistence"
Plus I have a whole hell of a lot of servers and awesome algos that can go up against HFTs ;-)
I invest in companies with strong fundamentals which are also significantly undervalued, presenting a good margin of safety. I write extensively about my ideas and investment strategies on my blog at Soberstocks.com