Galatians 6:14 “May I never boast except in the cross of our Lord Jesus Christ through which the world has been crucified to me, and I to the world.” In the psychology of mankind a positive self image is essential for a well rounded person.  That self image can make the difference between happiness and depression.  There is a huge difference between a positive self image and a boastful personality.  The first is healthy while the second is detrimental.  If you must boast, only boast about the love and sacrifice of your Savior.  That boasting is essential for all Christians to enjoy.