Dr Jessamy Hibberd is a highly respected clinical psychologist who worked for the NHS before setting up her own private practice. She is a member of the British Psychological Society (BPS) and the British Association for Behavioural and Cognitive Psychotherapies (BABCP). Jo Usmar is a freelance journalist and editor. She has contributed to a variety of national titles, including Stylist and Fabulous, as well as writing a regular relationship column for Cosmopolitan. She has appeared on TV and radio commenting on lifestyle and relationship issues.