Indeed there is nothing as powerful as a changed mind. In this video, Pastor TD Jakes gives exposition on this topic. The human mind (soul) mediates between the spirit and the flesh. It is the battle field of the spirit and the flesh. When the flesh dominates your spirit, one walks in sin and its fruits. When the spirit dominates the flesh, one walks in dominion and holiness. That is why Bible encourages us to renew our minds. Watch the full video and be transformed.