Often times I feel this way, getting a entry is not difficult, it's about how you manage the trade after you enter. Where should you exit in a trending market? Or certain scenarios where it is appropriate, often I feel it's experience or chart time.
Entries are built upon research and testing, but exit are built upon experience and chart time. My entries are nothing special, but if I teach my system to a new trader I doubt he would correctly exit, or even lose money if he only knew how to enter.
I don't think there's a fix exit system, at least for me, you need to know when to cut losses fast, when to trail the stops, when is a good profit target, or have you maximized profits? Is there a chance that price might continue in your direction?