Not my own

John Calvin, Ch. II (“A Summary of the Christian Life. Of Self Denial”). 1: 

O how great the proficiency of him who, taught that he is not his own, has withdrawn the dominion and government of himself from his own reason that he may give them to God! For as the surest source of destruction to men is to obey themselves, so the only haven of safety is to have no other will, no other wisdom, than to follow the Lord wherever he leads. Let this, then be the first step, to abandon ourselves, and devote the whole energy of our minds to the service of God.

I remember the song, "I'm Abandoned to the Captain." (Oasis Worship, Celebrate King Jesus – Praise & Worship Collection. ℗ 2012 Classic Fox Records. Released on: 1996-03-06. Music Publisher: (c) 1986 Birdwing Music). We sing in in church. 

I'm abandoned to the Captain
Of the mighty hosts of Heaven

And I pledge Him my allegiance
'Til the earth beholds His Kingdom