The easiest people to judge are those that we don't know personally, particularly those who we consider to be different from us. The wealthy judge the poor. The fat judge the thin. Nearly everyone judges those who we perceive as driving poorly.
Isn't it interesting that no one likes being judged. When judged negatively to one's face, the most common response is defensiveness. Perhaps the better response would be: Is this any of your business?
I propose that we all turn over new leaves and start giving one another the benefit of the doubt. Start with the people in your family. If your husband is home late from work, assume he is caught in traffic. If your child knocks over a vase, assume that it was an accident. Then extend it to others. Your best friend hasn't called in a month? She is probably extra busy at work. Your boss gives the promotion to someone else? That person just may have the right qualities for that job. You are cut off in traffic? No one is perfect! The other drivers are most likely doing the best job that they can of staying safe.
Give others the benefit of the doubt and become responsible for your own life and your own happiness. Leave them to theirs.