Greatness in the world is vastly different than greatness in the Kingdom of God. In fact, the two outlooks are in direct conflict.
My pastor once was a college football player. At that time, greatness was the privilege to tread the turf of a Rose Bowl Tournament.
Now, greatness is sharing the Word of God over breakfast at Fromin’s Delicatessen in Santa Monica with a few early risers. It is a privilege.
If greatness for you is money, your goals may bring you into conflict with God’s word. You may call yourself a Christian but the majority of your effort is, in fact, not to advance His kingdom.
Your view of greatness is your vision for life.