How do you handle a goal like "don't eat ice cream"? I'm having difficulty imagining a trigger that would automatically shock you in that case.
Read about factory farming, read about mammalian biology, and have an anti-interest interest in the suffering of sentient beings, and ice cream is impulsively repulsive.
That's not a bad answer (even of non-vegetarians....I'm paleo, but avoid factory farming in my meat. So this would help me if I staill ate ice cream)
But, you've missed the larger question, which was: how do you make triggers for acts similar to eating ice cream, which don't occur on screen or have any location based trigger?
tooth sensor that knows when sugar passes through it
you put the ice cream on the bracelet?
I bet perceived sugar and olfactory responses are measurable by EEG...