导读：春天来了，夏天也不远了，衣柜里的衣服还穿的下吗？商店橱窗里的美丽不想尝试？男孩子们还拥有去年夏日矫健的身姿吗？赶快开始调整饮食吧，抛弃冬日的臃肿，吃出健康，吃出美丽，成为别人眼中的亮丽风景吧！

Lose weight, eat less junk food -- they top many lists of New Year's resolutions. But sticking with those good intentions is just not easy.

The problem: "Most people have unrealistic expectations."

"They decide this is the year they're going to completely change everything about their diet," she tells WebMD. "That's just too hard to do."

Willpower isn't the issue, says Sass. "Willpower is about depriving yourself, and nobody gets excited about that. Besides, depriving yourself is depressing and leads to bingeing. Focus on the positives -- you feel better, have more energy, when you eat healthy."

When making dietary changes, "start small," says Cynthia Sass, a nutritionist with the University of South

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