Pre Op Weight Loss - So bummed!

I've been following South Beach since November and have lost 14 pounds.  I've lost weight on Atkins before as well.  I've never been able to keep it off.  My surgeon says that the low carb diets help you learn how you will need to eat after surgery.  I have found that getting off the carbs has made me not have the cravings I once had.  I stick to proteins and veggies with one serving of fruit a day now that I'm on phase 2.