Oh, I meant to add more thoughts on the journaling. My guess is you want to use the bracelet to help you during the day? I know your situation is very different than mine but I would think planning will be your best mechanism. If you are taking your lunch with you, you should plan the points for that food when you pack it in advance. And if you are eating at school, my guess is you know the lunch menu in advance and can again plan in advance.

It might be helpful to understand why you'd like to use a bracelet. I hate to sounding like I'm poo-pooing your idea.

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When you get to the end of your rope, tie a knot and swing.