Chrissy Teigen

I always wanted to be a teacher or wanted to do something with food. But modeling, I just never thought I could do it myself, really, ever. I still have trouble calling myself a model. I just never thought I was tall enough or skinny enough.

My big pet peeve with people posting food - and I love it when people post food - but my number one thing is when you're posting at a restaurant, and it's dark, like a date night, food never looks good. Flash looks horrible, no flash looks horrible. It's important to only do food photos during daylight - and it's all about color with Instagram.

I went in for a checkup, and when my doctor had me stand on the scale, even he was surprised. Seeing that number (which I'll take to the grave) was a turning point. I knew I needed to make a change. I cut out white flour and starches and worked with my doctor and a nutritionist to develop a plan.