If inhibiting your urges for eating is difficult, did you try taking steps to burn more calories in any way? This way, you are less inclined to gain weight. If you're not into workouts and such, try drinking Genmaicha Tea (a type of Japanese tea mixed with Bancha, Sencha and Brown Rice). A few years ago, my best friend (who was a devout Zen follower) told me to drink this tea before a meal, because it helps burn more calories. From what I understand, its caffeine level is normal and you'll love the natural nutty flavor. This tea also contains some Vitamin B1, which keeps our skin looking good!
In general thumb of a rule, essentially most Japanese teas are good for diet.
There are a lot of tea internet stores, but I personally like to recommned a San Francisco Bay Area company Teanobi. They specialize in imported Japanese gourmet teas. Their website is very pretty, and also highly informative.
http://www.teanobi.com