"I believe that the purpose of life is to be happy. From the moment of birth, every human being wants happiness and does not want suffering. Neither social conditioning nor education nor ideology affect this. From the very core of our being, we simply desire contentment. I don't know whether the universe, with its countless galaxies, stars and planets, has a deeper meaning or not, but at the very least, it is clear that we humans who live on this earth face the task of making a happy life for ourselves. Therefore, it is important to discover what will bring about the greatest degree of happiness."
Here is the rest of His Holiness' article on Compassion and the Individual. Wonderful to read on a day when you may be feeling down and questioning the meaning of it all.
Also I highly recommend the films 10 Questions for the Dalai Lama, Kundun, and Seven Years in Tibet.