Enjoy the flow of life. What is life? Time between birth till death. Two gametes develop into a complex natural machine like you. Are we just animals who evolved from single celled organisms and after millions of years have brains which makes your time on earth so complex. Enjoy the nature, enjoy the enviromental phenomenal mysteries in the world. Utilize your time, not only studying books but nature. Everything written in books are found in nature except literature. Enlighten your life with exploration. You dont know next day whats gonna come, a man just diagnosed of cancer have six months to live on the other hand a baby just born is going to learn the language of society. Again " Survival of the fittest", dont forget you have to survive, and stop taking life too seriously. Greed and Power, two weapons of misery. Take it easy Pal.