I realized in reading the comments to the Don't listen to the Naysayers post that I left off the most important part!
Once I developed the honesty and integrity to always eat the way I eat now and not accept the occasional treat or bite from someone's plate, or say okay, just this once, life changed. Once I accepted I was the one who was ENABLING OTHERS to keep asking me, because I sometimes did accept just one bite, taste, or slice, even after saying no. ONCE I CHANGED MY BEHAVIOR, the behavior of others also changed.
Having the willingness and honesty to always stick with my food plan no matter what, led others to understand that it is not a fad. People respect the integrity. Now, if asked, I give a polite no thank you. If someone persists I smile and pray for them. As long as I do what I need to do, I need not control what they do and what they do will not control me.