We too often think of rejoicing in trials as an extra burden, a spiritual duty which just makes trials even harder as we pretend to be happy about things that are painful.  But when we think this way we've really missed the boat.  The fact that we can rejoice in trials is a great gift, a truly precious treasure which is just not available to those without the Christian Worldview.  Although scripture does encourage us to rejoice in trials, it does so from the standpoint of celebrating the reasons why this is even possible, not from the standpoint of chastising us for feeling pain in painful times.