If you want to be really successfull in this realm you should always use STOP LOSS. It is simple as that!
Well it look so simple but it is not that simple we will have to get the point. It can said to be buy at red and never panic or it can be good to hold your emotions and wait until it recover the fallen price. So here is stop losing means dont panic just buy more and more you will not have to cry at the end. Most of time at lose you only have to hold.