I started this change with myself 3 years ago. I went from a mindset of "hating" everybody and be annoyed by everybody to help people when they need help (it can be an old lady in the supermarket) and also instead of being annoyed by people thinking about what they deal with and if its teenager being loud in a train instead of being annoyed and not doing anything. Just think about them being at a differeny concert than you its way more fun :D