Have your cake and eat it too

Can you please tell me why I was so motivated (still am) to not eat anything unhealthy but yet as soon as I finish my super healthy lunch (tuna wrap, tortilla chips and salsa) I ate 3 big bites of C*dance's birthday cake! Grrr....I am upset with myself. But it is not the end of the world and I only had 3 bites (story of my life). Ok...Rule number 2# Before I dive into something I know is not good for me I must consult with my blog! After writing about it, if I decide it's ok then I'll partake.