I have been trading for a couple years as a novice. More paper trading than real trading. I feel that I am getting to the point where I could make money in this business. Mainly I trade stocks, but I am interested in every asset class. My question is whether anyone is a successful trader while trading multiple asset classes every day. So for example you might have a trade in stocks, commodities, and bonds in a single week. Or is it better to specialize in one asset class (e.g. stocks, forex, etc)?