7. Treat everyone nicely
Regardless of whether someone is rude to you or not, just reciprocate as nicely and calmly as you can. Doing so doesn’t imply that you’re a fake person – it’s indicative of your emotional maturity. Treat everyone as you wish to be treated, namely with kindness and respect. Do this consciously, and you’ll see how the negativity around you will dissipate as if it was never there in the first place.