10 lbs by New Years Eve

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My goal is 10lbs by New Years Eve. Well, let me take that back...not concerned w/ the 10 lbs actually but wanting to drop a inch or two off my stomach before New Years Eve. Past experiences have let me to believe 10lbs lost equals about a inch off the mid section. I'm currently doing P90X and at a daily caloric intake of 1800 cals/day. Any help on doing this would be appreciated. BTW, 34 year old male - 200lbs. Thanks!