Vendee Globe 's MainSail speaks with British round-the-world sailor Caffari . Dee Caffari is the only woman to have sailed around the globe in both directions . Lack of sleep and loneliness are the main challenges , according to Caffari . `` The transitions are difficult . Desire , preparation and self-belief are the keys to success , Caffari says .
Vendee Globe 's MainSail speaks with British round-the-world sailor Caffari . Dee Caffari is the only woman to have sailed around the globe in both directions . Lack of sleep and loneliness are the main challenges , according to Caffari . Desire , preparation and self-belief are the keys to success , Caffari says .