Bryony Gordon has OCD. It's the snake in her brain that has told her ever since she was a teenager that her world is about to come crashing down: that her family might die if she doesn't repeat a phrase 5 times, or that she might have murdered someone and forgotten about it. It's caused alopecia, bulimia, and drug dependency. And Bryony is sick of it. Keeping silent about her illness has given it a cachet it simply does not deserve, so here she shares her story with trademark wit and dazzling honesty.