Quote from dbphoenix:
There are decisions that must eventually be made, if only by default, that have little or nothing to do with mathematics.
For example, The Wise will snuffle and harumph about taking what one can get rather than going for home runs. They'll tell you to set profit targets, which is, essentially, not much different from taking profits quickly. Therefore, even if one has a nice win/lose ratio, his profit/loss ratio may yet be anemic, and one big loss (they happen, and for reasons that one can often do nothing about) can wipe out the profits resulting from quite a large number of trades. Losing 50 and making 100 can keep a trader with only one foot in the winning column.
Losing 50 and making 500, however, is another matter, and at some point, the trader must shut out The Wise and what may in fact be nonsense and look within to determine just what it is that he wants. Is trading a great deal and taking all those small wins -- assuming that they appear -- really the road that he wants to take? Or does the prospect of waiting for better setups, entering the flow, and adding to his positions as the trade develops seem like a more interesting and attractive prospect?
A lot of pseudo-wisdom is bandied about on message boards, and putting all of it under the microscope is never a bad idea, no matter who it comes from.