Like a virus, negativity will attack you in the world and attempt to feed on your energy. A thick skin is some defence, but is fragile and needs constant fierce protecting in a battle that will be eventually lost. Rather that becoming one of the infected, with it eating away at you from the inside and spreading or intensifying the infection of others, it is better to be immune.
When you don’t need validation by someone else’s good opinion, you have gained your freedom to be who you are. People have every right to have an opinion about you, but good or bad, it doesn’t make it true. You know what is true; it may be obscured under heavy ancient layers, but you are the one to know.
Enjoy and accept the positive when someone has sensed something in you that resonates in them. The truth is that you become immune when it is no longer about you.