Consider & Reflect
Certain questions are universal and timeless. Regardless of one's culture, nation, or family, every person will have an inner longing to answer these questions. Those questions are "Who am I?" and "Where did I come from?" How a person answers these questions will ultimately guide how they live their life. This in essence, is one's worldview.
What is the basis for your view about life, family, evil, sin, death, business, and purpose? As one grows, learns, and experiences life, they develop an understanding of how the world works and how to navigate it. This naturally shapes one's view or perspective on life, meaning, purpose, and even suffering. Much of our worldview is adopted from our parents, peers, teachers, and many other points of influence from media, experience, etc....
As the preacher writes his conclusion in Ecclesiastes 12, he employs the congregation of Israel to remember their creator. His final challenge is not to consider the end of their life or reflect on the beginning, but to reflect and consider their origin. When you consider whose you are, the question of who you are begins to come into focus. When you know your Creator, the uncertainty and difficulties of life suddenly start to fade away.