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Trading is not an exact science. You can't do X and get Y every time. It is as much an art as it is anything else. There is no magic formula. Trading is all about probability. It is the art of correctly applying a set of carefully thought out rules and allocating the probability of that event to result in success. 

Each trade is an independent event. The market does not remember if you lost or made dollars the last time you traded.  Read more...