Before you trade have a strategy. Know when to buy, how much profit you want and when to give up when a stock starts going wayside. You will not make money on all trades but if you make more than you loose then I think you are okay!
I'm focused primarily on undervalued Biotech stocks trading @ <$10 with promising pipelines & novel therapies. My strategy employs obsessively thorough DD which helps me stay above the noise of the Street. PS: Did you know that I am utterly insane?