By Esti Pujana I’m a nurse – and quit my NHS job to move to Canada, earning 50% more overnight and looking after a fraction of the number of patients – something I’ve never regretted. Audrey Barnwell, 50, found herself suffering from chronic physical and mental exhaustion for the first time in her life due to the demands of the job. Days off became recovery time, motivation to see friends and family was lost and colleagues were quitting the profession left and right. Long hours saw Audrey, from Thornton Health, Surrey, walk home late at night or very early in the morning, which left her feelin…