Well, surely you've read testimonials where people say, while fasting, they feel greater than they've ever felt. Use that as a placebo effect. Keep telling yourself how great you feel...even if you feel a little under the weather, turn that into a good mood by being happy that your bad mood is a result of detoxing...which is a good thing!
Keep reminding yourself of the good that is coming from this.

I think you'll be fine. Only you control your moods. I would try to NOT do it the last half of your mentrual cycle so that possible PMS symptoms don't get in the way.

I don't get terribly moody. I promise myself before every fast to put on my happy face and that works fine enough.

I have terrible PMS though. 1-2 weeks prior, I do a 180 flip and I'm the most terrible, moody person to be around. I can't control it very well so that's why I say stay away from that time of month. If I had PMS while fasting, I'd be a complete monster.

i have a couple of teenagers. i really enjoy talking with them at the dinner hour to find out how their day went etc. i find that on this cleanse i like to prepare and smell food so i made my daughter a dinner for one tonight and sat with her and drank my food like it was dinner. we had a nice time. keep on cleansing. you will be amazed when you are half way through how good you feel. :>)