Within Yourself

Before you are critical of someone else, you must first look within yourself. The weaknesses and shortcomings that you perceive in someone else may very well be indicators of improvements that you need to make in your own life.
Don't depend on others to change, or try to attempt to force them to do so, instead you should look for positive changes that you can make within yourself. Here's the key, you’ll always have much more success controlling your own life than you will have controlling others.

If you strive to live in a positive world, you must be a positive person. If you desire peace, then you must be completely at peace with yourself.  You get what you give in this universe.
Life is a mirror that reflects your most authentic self back to you. It flows from the inside out.  Allow peace, love, joy and fulfillment to flow from the inside out. Make your world the best it can be.
The values and priorities that you live by will greatly influence the world that you live in. The thoughts and feelings you have within most consistently will determine how life unfolds for you on the outside.  So the next time before you are critical of someone, stop and look within yourself.