Being a good example is not enough to change the world, to change the people around you. You also need to be an eye opener for them to accept the truth and their responsibilities for their actions and words that they say. Understanding them has its own barrier do not push yourself to always understand them sometimes you need to speak up and try to open their minds about the things around them, you need to tell the value of it for them to know the essence of life.
Life is not always about yourself nor the others. It is about respecting life that is given to you. The gift of god that you should thank for and as a gratitude for your life do things correctly.