We best oppose error by promoting a solid knowledge of the word of truth, and the greatest kindness we can do to children, is to make them early to know the Bible.
Foolish, selfish people are always thinking of themselves and the result is always negative. Wise persons think of others, helping them as much as they can, and the result is happiness. Love and compassion are beneficial both for you and others. Through your kindness to others, your mind and heart will open to peace.
Doing the good deeds is like the grass in the garden. You don't see its growth. But, it does by days. Doing the wicked deeds is like the hone. You don't see its damage. But, it does by days.
The purpose of our life needs to be positive. We weren't born with the purpose of causing trouble, harming others. For our life to be of value, I think we must develop basic good human qualities - warmth, kindness, compassion. Then our life becomes meaningful and more peaceful - happier.