Seems so harsh, but recently I've felt taken advantage of and used. I had to finially face it when it became extremely obvious. It hurt me so deeply yet the two others haven't even noticed it- that's how little they had invested. So this quote is really not so harsh on others after all.
You can talk about me, trash my relationship, belittle my character, try to control me, try to ruin my friendships and spread lie upon lie until you're blue in the face. I'm secure in my happiness and my satisfaction with my life. You're vapor. You.dont.matter.