it takes practice. Find your biggest hater and figure out a way
   to see things from their point of view. Get them to either like
   you or block you. Either way, they won't forget you.
   Occasionally, someone will block me for being nice to them. (not
   fake nice either - I genuinely care about people who are only a
   few words on a screen - I KNOW there's a real person on the
   other end who is lonely and decided to engage with me, even as a
   hater) Sometimes they surprise me. They change their ways. Even
   those who can't stand me being nice and block me will unblock me
   a year or two later and apologize. I believe most people are
   basically good but they never learned how to be a friend
   properly. I try to show them by example.