We can know that we have a purpose because God has created us for a purpose. We are works of God which He created and then redeemed through His Son, Jesus Christ. God prepares us for our purposes. He creates us with talents. He refines us through our experiences. He plans for our salvation and invites us to have relationships with Him. When searching for our purpose, we need to include talking to God in our search as He knows our purpose!
God created you for a purpose. Talk to Him and learn what it is!
Thank You for creating me and for giving me purpose. Help me to follow Your will and to live with the purpose You have given me. Through Jesus I pray, amen.