There are some criticisms that trigger more hurtful thoughts within us, deeper wounds that have not yet been healed. The reason why some people seem to over-react to certain criticisms is because they are reacting to a far deeper pain, a pain triggered by the criticism just given.
We can discover these wounds by listening to our self-talk whenever we are being criticized. When somebody points out your mistake or says anything bad against you, what are you really hearing? Why are you hearing those words? Is it possible to replace them with other thoughts that are more supportive of your self-esteem? GOD never rejects HIS own and HE has given us willpower too.
So instead of feeling low or rejected when people criticise you, see yourself the way GOD sees you! Do you even know how GOD sees you? Take your time and find out what GOD has said concerning you! Just in case you don't know, I want to tell you that you are the apple of GODS' eye! Change your self-talk! Instead of saying pitying yourself and complaining that people don't love or care about you, start speaking your way to who you want to be, contrary to people's criticisms!