Hi SH,
I disagree with your mum... if you "allow" yourself to it this once, then I think it will be easier to "allow" yourself again.
I have a couple of dates marked on my calendar and on those days I will have something (resonable) other than a CD type product. So, if I was really craving chili, etc. I would tell myself now, "I'll have that on _____, if I still want it. And, if I do not still want it, then I'll have what I want them."
Right now, I am practicing my self-control and discipline skills.
Also, people often talk about how much it costs monetarily to be on VLCD meal replacement diet.
When I was on LL one of the ladies confessed to eating strawberries (and she did not lose weight that week). The counsellor asked her how much the berries cost. The woman said something like, "Two pounds." And the counsellor said, "No, they cost you the 66 pounds for LL, 2 pounds for the berries, plus the progress you would have made this week on your weight loss. Pretty expensive strawberries, don't you think?"
MM