stick to a list, which I rarely do, especially at Aldi where some things on my list are not in stock and I never know what I might need from the 'Aldi finds' aisle or frozen section.

Weigh yourself and then attach a photo of your garage/basement/ storage room filled with all your stuff to your shopping list. Write your weight in big print at the top of the list. Book a golf tee time for later on.

Never go shopping when you are hungry

The question doesn't specify what type of shopping. So I'll agree with Judy for grocery shopping.

For general over-all shopping, I'll say go shopping alone.

Rusty

Bring cash only / leave the credit card at home.

take a finite amount of cash (like $20) and no way check/cc to obtain more

I stop and think...do I really need it or just want it?