People give many answers to that question. For some, it's simply to enjoy life. For others, the responsibility of caring for your family provides motivation for the daily grind. Others, especially children and scientists, are motivated by the joy of discovery. Getting up each day means new opportunities to understand more about the world.
People find motivation in their careers, in helping people, in art, or in religion.
Many millions in our world are motivated by a thirst for religious meaning and peace. They meditate, pray, fast and perform works and rituals to a myriad of gods and powers. The Jehovah's witnesses came to my door some time back. They are motivated by the belief that doorknocking will earn them a spot in the New Paradise on Earth. I want to suggest that as followers of Jesus Christ, we have a motivation for life that is very different from all others, and better than all others.