purpose is said to mean-reason for creating a thing. Therefore, one can only fulfill his or her purpose here on earth by first of all, discovering reasons for existing. Otherwise, he or she will end up fulfilling other people’s purpose. God forbid!
As a christian, your purpose on earth is to subdue the earth by multiplying and manifesting the WILL of the father and destroying the works of the devil. May you receive the grace to fulfill your purpose in Jesus name. Amen!