#7 > I will always give so much time to the improvement of myself that I will have no time to criticize others.
One of the worst wastes of time is to spend it criticizing, putting down or judging others. Each second you spend thinking about or talking about other peoples faults, is precious time that you could be using to improve your own imperfections.
If you waste time, you can't get it back. So take control over your negative thoughts of others & spend that time and energy on improving yourself. Don't waste it criticizing others.