((((Hugs)))) Hope you are feeling better today hun - onwards and downwards as they say!
You ask
'Why do I do this?' and I think the clue lies in your comment:
If I eat one non-SW food, then that's it for me...
I think thats the key - if you see a food as
'non-SW' then it becomes forbidden and straying into the forbidden can lead to an all out mutiny as you found! Like you, one slip and I had 'blown it' then eaten everything in sight and ended up hating myself for it.
For me, this time round on SW I decided that it HAD to be an all out change on the way I approached food (and exercise but thats another story!) and key to that mind shift is thinking that SW is a
new way of eating FOREVER and therfore it is
not a diet. No food for me is forbidden and 'non - SW' now. I stop and think - do I really want this food/drink, if so how much, how many syns, and how will it fit into the rest of my days/weeks food? Then decision made, permission given, I can enjoy it rather than bolt it down and then worry. Or I decide not to eat it, and walk away, decision made.
Those other inevitable slips of 'chip/ice-cream/milkshake/crisp/popcorn/chocolate button/cheese testing' moments are synned mentally straight away, mentally allowed and forgiven, and then written down as soon as possible. It happens without thinking sometimes I know - yesterday for me was a lovely ice cream offered to me by my daughter to try! I did (it was yummy) but then added 1 syn to my day's total for my treaty taste!
Your couple of chips and Frozen yoghurt could have been planned/synned like that, and accepted immediately as still being 'on plan', then no more guilt and torment leading to more eating after.
Its a mind shift, and has been incredibly powerful for me as this was where I stumbled before.
I also try to think round situations and plan ahead for moments like these, especially at social events and eating out. I often pop a peppermint (Extra Strong Mints at 1/2 syn are good) in straight after eating or when faced with temptation (or even when cooking) to make it a more conscious decision to not put the 'extra nibbles' in my mouth.
A greasy chip is not desirable in a minty mouth!
Just my thoughts, and I hope helpful in some way. No matter what, you are back on plan and because you recognise what you have done, the good news is you can change it!
Have a fabby day hon, and take care. xx
