Riding the peaks and troughs of the S&P but not very well

Today I thought to myself that if I could ride the peaks and troughs of the market, I could capture more of the profits. I am finding that I tend to chicken out at about +10 prices or so.... if I am to capture more profit, I'll need to ride through a couple of peaks and troughs. Stock prices and any type of financial chart never moves up in a straight line.. it dips and peaks as it goes up and down. Anyway, as you can see, the first trade was a short when the market approached making a triple