Every Christian has a distinctive spiritual motivational gift. When we were born physically, we were born with certain natural abilities and attributes. When we were born spiritually, we receive certain spiritual abilities as a member of the body of Christ.
Natural abilities produce natural results, spiritual abilities produce spiritual results.
Finding personal fulfilment is only possible by developing your spiritual gift. Each of us has a desire for meaningful achievement. The ultimate of this is having a significant part in God's divine program. This will only be accomplished as each member of Christ's body functions according to their gift. God wants each of us to discover and understand our gift.