All of us have been born with a purpose (ingrained in God's plan); because God have allowed us free will, the power of OUR choices can alter our predestined purpose (GOD'S perfect plan for our lives).
Ephesians 1:11 AMP
In Him we also were made [God's] heritage (portion) and we obtained an inheritance; for we had been foreordained (chosen and appointed beforehand) in accordance with His purpose, Who works out everything in agreement with the counsel and design of His [own] will......
Ephesians 1:11 GNT
All things are done according to God's plan and decision; and God chose us to be his own people in union with Christ because of his own purpose, based on what he had decided from the very beginning.