It is the term 'cheat' I find difficult. It suggests deception. Who would I be trying to deceive? Certainly not the nurse, who already despairs of me, as I tell her the truth. I.e. I am no longer following her advice on healthy eating. 'Cheating' is only really cheating myself, nobody else would be that bothered.
I don't like the term 'treat' where carb (aka junk) food is concerned. Why would I regard something that would ultimately cause me harm a treat? Really bugs me when nurse says its ok to have a treat a couple of times a week. When she means cake, chocolate or takeaway, all junk carb loaded.
But I digress. You,
@annalaix are craving bread. So, if you are able to, and your meter will be your guide here, go ahead. Have the bread. Don't let the craving linger. Eat bread, craving conquered. Perhaps. For me, and I suspect others, the problem would be that the carbs I no longer crave, once taken become addictive.