I read this poster and felt the zings that one feels when a truth is spoken. I get this feeling when something I want to talk about is close to my heart. I get choked up. Emotion is what alerts us to the "important" things. At a cerebral level, nothing is really that important.
Think about all the things you will not talk about to others. Make a list, just for yourself, and read it out loud. Then, burn it or tear it into bits and flush it. There! You have talked about it. You have loosened its hold on you. Relax for a bit.