Found a cute little site with some motivating scripture! Here are a few...

• "Do you not yet understand that whatever enters in at the mouth, goes into the belly, and is cast out into the sewer?" ~ Matthew 15:17
• "Be not anxious for what you shall eat, or what you shall drink ... or what you shall wear ... Isn't life more than food? ... and the body more than clothing?" ~ Luke 12:22; 29
• "Man does not live by bread alone, but by every word that proceeds from the mouth of God." ~ Matthew 4:4
• "The kingdom of God is not eating and drinking, but righteousness and peace, and joy in the Holy Spirit." ~ Romans 14:17
• "Your body is the temple of the Holy Spirit ... therefore; glorify God in your body." ~ I Corinthians 3:16; 6:19-20
• “I can do all things through Christ who strengthens me.”~Phillippians 4:13 
• “Be careful for nothing; but in everything by prayer and supplication with thanksgiving let your requests be made known unto God.”~ Phillippians 4:6 
• “Whatever  you eat, or drink, or whatever you do, do all to the glory of God.” ~1 Corinthians 10:31