It's human and perfectly normal, alas! Intellectually, I *know* that the mistake I've just made is best forgotten and won't make much difference if I get back on track straight away, but a 'may as well be hung for a sheep' mentality takes over if I'm not careful, and before you know it one tiny mistake has spiralled into one great big mistake because I've convinced myself I've blown it. Best thing is to get right back on the Slimming World horse, dust yourself off and count it as however many syns it was, but in reality I have to battle myself not to follow up with a family-sized bag of Revels. Human nature, I'm afraid... good luck; it is possible to do it!