"I have situations where I don't recognize people on a daily basis," says 46-year-old Heather Sellers, who has suffered from a condition known as face blindness her entire life. "I can't remember images of the human face, even for a second. I have failed to recognize my mother and my father ... I live my life in deep uncertainty, I'm never sure if I've got the right person or not. I make a lot of mistakes."

Heather was diagnosed at age 38 and says one in 50 people suffer from this condition, so she chronicled her experiences in the book titled You Don't Look Like Anyone I Know. She recalls her diagnosis and says it was a life-changing moment. "It was like the lights came on in my life. I had two words - face blindness - and I knew what was wrong with me. I wasn’t crazy, it's just one, tiny little part of my brain that doesn’t work like yours does; it was incredibly relieving!" she recalls. "But I had to then tell people."

She was amazed to discover that the condition which had previously isolated her now prompts instant kindness from her friends and new people she meets. "I tell people right out of the gate, I say, 'I’m Heather, next time we meet I probably won’t recognize you, please always tell me who you are,' and people do, they step in! My belief in human kind is restored on a daily basis." She is divorced and enjoys dating, and jokes that telling prospective suitors about her condition is a great screening device. "Everyone I’ve gone out with has been incredibly helpful, except for one guy who said, 'I’m not freaking out, I’m not freaking out, I’m not freaking out,' and so that was good to know!" she says, noting his discomfort with her face blindness. "It saved a lot of time. He needed someone a lot less interesting!"