Oh My Butter!

I am about half way through of my 30 day vegan experiment and am really struggling. I am feeling really restricted for some reason, even though I am trying all sorts of wonderful recipes. I am craving cheese pizza and an onion bagel with cream cheese.
Last night I had a spot of butter with my bread, which was worth every bite! I am extremely tempted to say I've had a good run, have learned a lot of healthy eating choices, and will stick with a vegetarian diet (which I have done in the past) once I am through. Man.....the next 2 weeks are going to be a struggle!