Let me let you in on a secret.  There is a key to long-term investing success.  It is nothing complicated and is actually quite simple.  In fact, it is so simple that many investors disregard or ignore it entirely The  key  is to be able to consistently determine the trend of the stock and when that trend may change.  In other words, knowing what direction the stock is moving in and when that direction will likely change is all you need to know to be a successful investor! I know this simple secret sounds very easy and some of you may be scoffing at my proclamation. The truth is t...