I succeeded in sticking to my 'all-liquids' rule for the day. It's an idea from the Deepak Chopra book 'Perfect Weight.' Once a week, have only liquids (even if soup is included, or smoothies, etc.).
I tried it for a day last week. This week, I was reluctant, thinking about what I had in the fridge for meals, but in the end, I'm glad I spent the day with soup and juice again.