Really, what difference does a worldview make? Once you understand how a worldview works, you'll realize it makes all the difference in the world. Your worldview is at the core of who you are - it affects every dimension of your life. Your worldview, the set of beliefs you hold about what is really real, answers the question of whether God exists and if he exists, if he has spoken. It determines the nature and origin of man. It identifies what is wrong with the world and what we can do to fix it.
Your beliefs about these "ultimate" issues determines what you hold to be true in life. That in turn determines what you value as good. Finally, your values translate into behavior - how you live your life, and it all starts with your worldview. If we get the worldview story wrong our beliefs, values, and behavior will be off-kilter.
Comedian Bill Engval performed in a comedy special entitled "15 Degrees Off Cool." In the course of the performance, he shares a story about one of his birthdays. Bill had always wanted a motorcycle and his wife said she would buy him one for his birthday. Expecting the best, he purchased all the appropriate gear - a leather jacket, leather pants, a new helmet, gloves - he got it all. When the big day arrived Bill went to the garage to collect his prize and there he found a Vespa motor scooter with a big bow on it. Almost, but not quite - 15 degrees off cool.
Check out your own worldview. Have you got it right? Or are you trying to impress your friends with a motorscooter. More on how to answer that question later.