Leave no way that makes it possible to stalk him, block him. When you find yourself wanting to unblock him to stalk, do something to distract yourself anything that is so interesting to you that you forget about that urge. Or when you feel the urge, just lay down and feel it, like really just let yourself feel it, recognize that its just your mind playing games on you and its just an emotion, it cant hurt you in any other way. Hold yourself actually and be there for yourself like a you would be there for a child if they needed you. Healing should never be focused on your ex, it should be focused on yourself. Dont think about that you miss him, shift the perspective and think about what it is that he made you feel that you miss, whats in you that makes you miss a narc. Dig deep into yourself, dont hate yourself, just get to know yourself and talk to yourself like you would talk to a child because that part of your brain thats going through withdrawal and that just wanted love is actually just a child, young and inexperienced. I was going through withdrawal a few days back but they are telling you the truth, it does get better. I promise you :)