Congratulations on your first post, Larrs!

LittleAnne is right, you need to ensure that your water intake is at least 2 litres per day. Exercise makes such a difference too!

The High Protein Diet does allow for a higher carb intake initially but it is about equivalent to Atkins ongoing weight loss for many people. Some do have a sensitivity to artificial sweeteners, and Prettyface you may find that the aspartame in slimline tonic is the killer. You could also go without alcohol for 2-3 days to see if that kick starts you again.

The other thing I have found on the Clark diet is that the time of day you eat your main carbs has a big effect. I have the highest carb intake at breakfast, a lower one at lunch and lower again at dinner. It's that old adage "Breakfast like a King, Lunch like a Prince and Dine like a Pauper". As I am on the go all day I burn off my carbs and it works for me!

Hope that helps.