There is a huge amount of freedom that comes to you when you take nothing personally.
Exactly. Just be yourself! If you don't like who you are or you're ashamed of how you treat people, work on it! Do small, simple, nice gestures for people. Don't make a show of it so you can look good. Kindness isn't for the benefit of you, it's for them. And then maybe you can get something back from it- like respect.