Despite her lack of medical credentials, "Former Fat Girl" Delaney (a freelance journalist currently writing for Health
magazine) is convincing simply because she has not only lost weight but has kept it off. She has figured out how to go from size 16 to size 2 jeans and maintain a healthy, slim figure for decades. Instead of talking diets, Delaney focuses on motivation. It's essential to feel like you have control over your life; you have to believe you can change, she insists. After talking about the Jazzercise class that first gave her that "I can" feeling, Delaney offers some practical advice so readers can go beyond losing weight to realizing a better self-image. Keep your new eating/exercising regimen a secret, she advises, as family and friends may be surprisingly resistant to your changes. Be firm and exclude foods or situations you know you can't handle. Visualize the life you want for yourself. Even if her advice is not terribly new, Delaney mixes optimism and realism in such manageable proportions, she may give readers just the boost they need. (Apr.)