I do not believe there is just one simple answer to this question. I think as you live your life, the worth it has, has been created by you.
Consider perhaps that your life's value is how you engage with every obstacle and aspiration. What you become because of the way you create a meaningful life.
In your lifetime you have different experiences. When you speak of your life's experiences a story emerges that can clarify its value. In your hand you hold a book that contains a variety of inspiring letters to accompany you as you discover the significance of your life.
Your life is worth living. Now you can find out how