The trouble is hidden at the end of the line, check out the "all you need to do is to trade with an edge/strategy that works and follow a trading plan", well if there was any edge or strategy that would work forever everyone would have followed it.

That is what bothers me the most, some people think that there is a method or a strategy that you can use to make a profit and they are missing the fact that there is 8 billion people in the world give or take (said 7 but I believe it is closer to 8 nowadays) and over half of them are poor, don't you think if there was an edge or a strategy that would allow you to make a profit, those people wouldn't realize this and EVERYONE would use it? So by all conclusion, no strategy can work too long, it works for a while but then too many people use it and break it so you gotta find a new one.