I struggled like most of us with trying to lose weight on WW etc. The one thing which put me off a VLCD was the strictness. Only being able to drink water, no milk in coffee and the thought of all those months with no food at all.
I just ruled them all out completely until I read up on Exante and realised actually the occasional coke zero or skimmed milk in my coffee wasnt going to kill me

Tell me what I MUST do is the one sure way of making sure I do the opposite. The mere fact I 'wasnt allowed' food on the others would have no doubt sent me running for the cupboard.. knowing that if Im struggling I CAN have some chicken etc generally means I dont bother.
Ive had a few nights out, one I went to a chinese buffet, ate nothing but meat with sauce scraped off

stayed in ketosis and still lost 4lbs that week.
For so many of us a VLCD isnt only a last resort but its for months at a time, flexibility is definitely keeps me on track and Im more than happy with the losses Im having