It takes approximately five minutes of perusing trading forums and doing simple searches in Google to realize that there are literally thousands of ways that traders make money in the market. Many systems appear to work as there are many traders who make a good living.
What we would recommend for a person who is just beginning to enter the trading world is to read and research these systems and see what approach they feel most drawn to. The next step unfortunately is the most painful one, and that is the trial and error stage. To form a system for oneself can only come from some hardship. However as time progresses, and if the individual is sufficiently self-reflexive, then a manangable system emerges that not only functions well as a career but that fits the personality of the trader.
As for the thousands of ways to make a living in this business -- they all seem to have several things in common. One has to be self-critical and to constantly try to learn from one's trades -- the winners and the losers. We would recommend a trading journal to aid in this effort. Second, one has to control one's emotions and never ever lose one's discipline. Discipline is the thin blue line between becoming a great trader or washing out, as do the overwhelming majority of people who enter this career.
Trading is like any other job -- you need to work hard, do your homework, and at all times, act like a disciplined professional.