Mark Tyrrell HGDip, DipHypNLP(BHR) has been working as a hypnotherapist and trainer since 1995. He has worked with the London Metropolitan Police, business people and individuals looking for help to improve their lives. He has also given lectures to thousands of health professionals on self esteem, detraumatisation and workplace bullying. He is co-author of Giant Within and has authored and co-authored over 300 hours of self help products. In addition, he has helped develop a groundbreaking depression information website and treats clients with a range of problems – from clinical depression, panic attacks and PTSD to public speaking and sports performance.