You’re never going to be able to get everyone in the world to like you. Maybe it’s a coworker, or a boss, or a friend of a friend.
No matter what you do and how well you do it, there will always be someone there to rain on your parade, so it’s important to learn how to deal with haters.
They are jealous of your success, but deny it and express negativity toward you and your accomplishments. They look for the smallest mistake or hiccup, then attack, never acknowledging any of the positives.