Sometimes people are rude and judgemental. We can't please them to be good as what we are to them.
My parents would always say and remind me that, "be good in every step you take. Respect others and watch every words you say". I'm nice to the people who are nice to me, treat me bad and I'll be your worst enemy quickly. My attitude is based on how you treat me. Sometimes, I can be bitter sweet.
Treat me right and I'll treat you better, treat me bad and I'll treat you worse, that how life goes.