LivingWater
Honestly, I stopped telling people I fast. lol :) During my last fast I got a lot of grief. It felt like everyone around me was waiting for me to pass out. lol Now, I just say that I'm on a very specific diet. Sometimes people want more information and then I tell them, but on whole not many people know what I'm doing.
It does get lonely and discouraging at times, though. I pray a lot, and read the Bible (lots of encouragement there) and visit curezone where I know that others are doing the same thing. It also helps to know beyond a shadow of doubt that what I'm doing is wonderful for my body and that I get to see the benefits right away. I also have a family that believes in what I'm doing, so that really helps. :)
Oh yeah, and I have a daily "dieting" devotional that takes about 1 minute to read. I read it before I start my day. Good encouragement and food for thought.