Becoming a good person starts from your school days, when you are just a child, child is like soft mould and education and culture and manners that parents and teachers give to this soft mould gives shape to the good character of a person and then he does not has to try to be good because he is good.
Honesty, good manners, clear conscious, welcome smile for all, readiness to help all, decent language, respectful behaviour with all are some common qualities of a person's nature that makes him good in society.
Like Gandhiji said" Simple Living and High thinking " should be motto of our life.