I've spent the entire day in a small classroom freezing cold as the heating wasn't working. As a result, I grabbed a massive jacket potato with cheese and beans in a desperate attempt to warm up. I've since had Tarte au Citron and feel like I'm undoing all the hard work that I've been putting in over the last few weeks. I feel like I need to write off today and tomorrow (meal out with friends for a leaving do) and start afresh on Friday. Is that OK? I don't mean go mad, but just stop kicking myself as I feel like it's counterproductive???