First of all, don't expect to make easy money by trading. There might be a times when you make good profits in easily, but it is hard to repeat that performance on a consistent basis.
Secondly, always know the risk for every trade you take, before taking the trade. As traders, we want to focus on profits, but losses are an inevitable part of our business. Quantifying your risk will help you make sure that you don't wipe out your entire capital.
And last, read and research as much as you can. Never stop learning new stuff be it risk management, psychology, trading systems, strategies etc.