How Do We Measure Progress?

To me, the best kind of life will be that todays be better than yesterdays, and tomorrows be better than todays. Of course, progress takes the biggest part of maintaining my daily morale stable. As long as I am more happy than the me yesterday, or even a second ago, my life is complete. The best way to measure progress is to be aware of whether you're happier than the you before. Happiness takes most part of our life.