"This was my heaviest pre-pregnancy weight, in 2007. I remember feeling just terrible about myself when I saw this picture. At that particular point, I was really unhappy with my lifestyle and my weight," Mara Schiavocampo said. Her book, Thinspired: How I Lost 90 Pounds -- My Plan for Lasting Weight Loss and Self-Acceptance, documents her 90-pound weight loss. It will be released on December 30. 
Mara Schiavocampo/ABC News