Fill up on your P foods: meats, fish, eggs, beans, etc.
Make your meals more filling and you may be less likely to pick?
I know it's annoying, and I do it often enough myself. But I've been drinking water in place of wanting to snack and eating fruit too.
I've also been trying to find something to do to stop the boredom, because that's half the reason I overeat/eat high synned things. Colouring is a good one, or reading a decent book.
You could also try making a Syns box. Pick up some of your favourite things and write the syn value on them all so you know what you're picking at.
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