At 28, Cory Martin thought she had it all, a budding career as a writer in Hollywood, an apartment of her own, and a healthy obsession with yoga. But when she found herself on the floor of her apartment wailing into the phone, 'but I don't want to be sick, ' her entire world came crashing down.

A doctor had just revealed that she had Multiple Sclerosis, a potentially debilitating disease, her good friend was getting married that weekend and the only people she wanted to call were her parents. In a time when she was supposed to be coming into her own as an adult, all she could think...