Choose good fats (olive oil, avocado, grass fed butter, linseed oil, chia seeds), protein (fish, eggs, canned/dried beans, nuts
, seeds, chicken, red meat, some cheese) and veg (anything, just choose more veg than fruit) over carbs. And when eating carbs make sure they're wholegrain. That's what I focus my meal plans around. That way any extra snacks or indulgences full of sugar or white flour don't throw my diet into carb overload.