Getting back into shape can be a total nightmare. Just ask anyone who has tried to lose weight and keep it off for good. The first thing they’ll tell you is that it’s a lifelong struggle. But Amanda Wood decided she had hit rock bottom and needed to lose weight, stat. So she reached out to a nutritionist and a personal trainer, who offered her some much needed advice. That’s when Amanda Wood's weight-loss transformation began, and she discovered that the key to changing her life depended on her doing three things. After all, losing weight isn't about dieting for a week. It's about acquiring better eating habits that'll last a lifetime. Here's how this one woman lost more than 150 pounds will simple nutrition changes.