Develop success from failures.
By criticizing, we do not make lasting changes and often incur resentment.
You can't win an argument. You can't because if you lose it, you lose it; and if you win it, you lose it.
Be a good listener. Encourage others to talk about themselves.
Remember that other people may be totally wrong. But they don't think so. Don't condemn them. Any fool can do that. Try to understand them. Only wise, tolerant, exceptional people even try to do that.
Your smile brightens the lives of all who see it. To someone who has seen a dozen people frown, scowl or turn their faces away, your smile is like the sun breaking through the clouds.