If you try all you can to be kind, nice, humble, and all of the above, and someone coldly says to you, "Don't talk like that to me again, and get out of my life you wimp." ignore that someone, because that someone is just one person out of millions and billions of people. Be the best of yourself and the people who give you a cold shoulder are not going to matter in years or millions of years. Chances are these cold people encounter you once, and if you try to impress them over and over again they won't change their minds of you, so you were better when you were the best of yourself before more so than after for impressing the mean person.
If this cold person thinks you are too traditional for this time, or even hell, thinks that you are crazy for even being nice, ignore the person.
WHO CARES ABOUT COLD PEOPLE. BE YOURSELF!