In my teenage years I was a boy with a little bit negative mindset. As a kid growing up with not normal looking. I have a crook face and my eyes it's misaligned. You can imagine how much I have had an unpleasant experiences when I was a child. fortunately it's just a words not physical attack. Late of my teenage I started reading a book about self improvement all kind that stuff. the positive mindset started to grew on me. But not consistent until I became fully adult. See the world for what it is, not what I believed it has been. The negative thoughts still come back from time to time, but I'm ready to fight back!