I'll give you the method away for free.
Find something you are actually interested in, then see how people are operating in the niche. Go ahead and reverse engineer their process, but make improvements and do it better. Since you are actually interested in it, you will have an easier time outperforming the competition because they are probably just doing it for the $ and cutting corners. Your interest will produce a better, more high quality output and at the same time, you won't be miserable doing it.
Good luck!