To be able to understand where our money was going, we decided to keep receipts for a month and tally it all up in categories. We planned to keep every receipt during the month of January. When I finally got through the pile, it seems we didn't do such a great job of keeping receipts. But the category totals were pretty scary. Eating out is sooo expensive.
To quote
boadiccea... lather, rinse, repeat.
We're doing it again this month. And will likely do it again after that. Each time we increase our awareness and curb the impulse buying.