Jawahar Jangir Posted about 3 years ago If you could teach the world 1 valuable thing you learned, what would it be and why? This idea is the basic essence of life. We all end up wasting so much of our precious time in worrying about the future and regretting about the past that we are either in the past or future and waste the present. If we can all learn to be in the present, life would indeed be wonderful and we would become highly effective in what ever we do. This is also the key to happiness.