Idk...normal brained people do that too! One thing I never do is go to the store hungry because I will totally buy a ton of junk. I know TONS of people like that.

I usually plan mostly what I'm going to get and don't get much beyond it. Most of it is meat, produce, and dairy. I only let myself get a "treat" about once a month. I pick one junk item. It's hard, but money is tight, so I just tell myself I don't have the money.