Custard Creams should be banned from my house!

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Im planning a heavy week of gym work and good eating this week but I am struggling not to eat everything with oven chips at the moment! Im eating a lot of fish in salads for lunch (tuna, salmon, smoked mackerel) its dinner Im getting stuck on. Anyone got any ideas?! Ive got a fair bit of meat in the freezer but I need some low carb potato substitutes if anyone has any ideas?! Thanks!!