Hey Nomorepanic,
Don’t worry, we’ve all been there too. I fell into a bag of crisps on my first day! Please don’t be too hard on yourself. Be proud that you managed three days of a new way of eating. As Igor says, it was just one day. And now you’ll be motivated not to do it again (but even if you do, it doesn’t matter). Trelawny hits the nail on the head with yesterday is history. Move on and take today meal by meal, step by step. You’ve done three days, you can definitely do more.
Good luck π