I don't really know what "category" you would call me.. however, I get a serious thrill out of hurting people (especially if they are defenseless and even better if they are self-confident). I don't hurt people out of the blue, but I do hurt people when I feel the urge (usually happens to the person closest to me or they just happen to be in a convenient spot for me to lash out). I hate being yelled at for doing it however so of course I figured a way to keep it hidden. I feel no regret after hurting people and want to do it again time after time. I'm not proud of this, so do you know an effective way to get this under control better instead of simply hiding it?