We're our own worst critics, and when we mess up, if we're not careful, we can spend the rest of our lives wallowing in the mess and just surviving until our time on earth is done. But our purpose in this life is to live for Christ - not to merely exist, or to use this as a waiting room for heaven. God's given us a calling through His Son to be in relationship with Him and to make the most of this time to bring glory to Him.