The problem with spirit filled people ,who belong to Christ Jesus,is that when they sin, they don't realize that they are walking in the flesh,therefore fulfilling the lust of the flesh. We must walk in the spirit so we won't fulfill the lust of the flesh. when you walk in the spirit, you walk as if you do not have a body to cause you to lust in the flesh. the spirit and the flesh is at war with each other daily. Can this be accomplished? yes, by the renewing of your mind. renew it with heavenly things, or replace the bad with good from above. mark; 13' 34-36. don't get caught sleeping,. meaning doing the wrong things.