Writing about food for a living, as I’ve been doing for the better part of the past 10 years, makes each day at the office a gauntlet of temptation. On any given day, doughnuts might arrive from Krispy Kreme for breakfast, some fried chicken from Popeye’s could show up around lunchtime and any assortment of goodies could make their way to our desks throughout the day, especially around the holidays. That’s why I knew that starting, and maintaining, the keto diet would be a serious challenge. Cutting out carbs and sweets meant saying “no” to a lot of those tasty treats that circulate through the office as well as adopting a whole new way of eating. But two months, 25 pounds and one holiday season later, I think it’s safe to say that if I can do it, anyone can. If you’re unfamiliar with the keto diet, here’s a quick primer: By strictly limiting carbohydrate intake …