I think you're on the right track, the fact that as you said, the emotion does not have a meaning or a reason and it's just a momentary thing. You can't be angry anymore when you truly realize that it's just your thoughts, and it's not caused by external factors. No person, place, thing, can *make* you angry. You don't have to embrace or fight the thoughts away, just notice them as a natural process of your mind and then let go.