A kind person?A good person?

What is definition of being good and kind?I don't know,but for sure,i think i am still not doing my best in my life.I want to be a better person,more knowlegeble,prettier,slimmer,knew more things,and be kinder than who i am today.But how?I don't know how.I think i always do not well enough.I didn't treat my friend good enough,towards my family,what have i done?and what can i do?I still can do better.
Aim of life is seeing others happy,i would be happy too.Am i too shallow?Am i manage to do so?Am i manage to make everyone happy?Never mind,only can try my best.