How Important Is Tracking Progress and Reviewing Trades?

i think one of the most important things, the biggest thing that ever happened to me in trading was understanding trends. You know, all markets go up, up, down or sideways. And when stocks over all, like when the s and p 500, for example, is in an up trend a, three out of four stocks are going to follow that trend. So if you're trying to short when the market's going up, you're just givin your money away. Ah, and i think understanding how trends operate, being able to draw a simple trend line on a chart, all of those things, they seem simple, but a lot of traders don't know how to do