WALKING IN THE SPIRIT AND NOT IN THE FLESH

Believers today must walk in the spiritIt  is the essence of the steward ship of our dispensation and the criteria  by which God will evaluate us. No one in the old Testament had ever commanded , walk  in the spirit, It  was new with the apostle paul. Jesus had hinted at it. and laid the groundwork fo it . But paul made walking  on the spirit  the central element of the believers responsibility, so, what does it mean to walk in the spirit , and how do we accomplish it