A sense of humor helps us to see ourselves and others in a different and more positive light, and allows us to be content with the things that are beyond our control. Try to use humor to turn irritation into lightheartedness. When you feel that stress or anxiety is overtaking you, try to smile, not broadly but just enough for the lips to turn upwards for a moment. Practice laughing at your mistakes and shortcomings to improve your self-esteem. That way, you can prevent negative thoughts. If you make it your habit to smile regularly at yourself, you will find it easier to be tolerant towards yourself and others.