Matthew 6:16-18

16 "When you practice some appetite-denying discipline to better concentrate on God, don't make a production out of it. It might turn you into a small-time celebrity but it won't make you a saint.

17 If you 'go into training' inwardly, act normal outwardly. Shampoo and comb your hair, brush your teeth, wash your face.

18 God doesn't require attention-getting devices. He won't overlook what you are doing; he'll reward you well. A Life of God-Worship