I'm the same, but with peanut butter! I've got it in the fridge at the moment..... right at the back behind a giant bag full of silver beet. When I do get it out, it get's weighed before and after, so I can see exactly how many calories I have eaten, which is sometimes a bit of a wake up call!
I look at Nutella though every time I go to the supermarket. I won't buy it though because I know what will happen
I can't buy jam anymore either. That just gets eaten straight away. With a spoon. None on bread or toast like it's meant to