But that doesn’t stop us from becoming frustrated when the latest fad or crash diet fails. Unrealistic expectations and our instant gratification society can turn losing weight into such an overwhelming concept that many simply stop trying. Popular dietitian Keri Gans has heard every story out there and spent years helping thousands of clients retrain their habits to form new routines that will have a decisive impact on their weight. The cornerstone of her belief, and that of her book The Small Change Diet: 10 Steps to a Thinner, Healthier You (Gallery Books, March 2011), is that the changes that will make the most impact are often the smallest ones.