HI Googley, I've done that a couple of times, you say you dont know where it came from, well thats where the work lies, in working out where it came from and what time it comes from. Your therapist will be able to handle your anger, and thats what scares us the most, that someone might not be able too, and that we may destroy something "Good" with it, but you won't it just feels monsterous, but its not.