When discovering about people not liking us, it's good to think, "I'm not going to change myself because of them." Stay true to yourself.
However, if an immense number of people feel that way towards you, it's good to reflect on our character and deeds for self improvement.
There must be reasons for the dislike. True, what others think of us don't matter, but having good PR benefits us a lot.
And most importantly, we want people to share our happiness, and keep us in their prayers. These are bonuses we couldn't ask for more.