Not new to MFP, but new to taking it seriously. Need friends for motivation

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I'm a 43 year old vegetarian. I'm not overweight . . . yet, but age and slower metabolism are catching up. I would like to lose about 20 pounds, but I have no will power when temptation is in front of me. I'm great when shopping and it is not in the house, but the workplace during the holidays is wrecking my healthy eating. I need an accountability buddy.