Dr David Hamilton has a PhD in organic chemistry and spent four years working in the pharmaceutical industry, developing drugs for cardiovascular disease and cancer. Inspired by the placebo effect, he left the industry to write books and educate people in how they can harness their mind and emotions to improve their health.

He is the author of nine books, including How Your Mind Can Heal Your Body and The Five Side Effects of Kindness. David is the 'Kindness Tsar' for Psychologies magazine and writes for Soul & Spirit Magazine and the Huffington Post. He has appeared on Channel 4's Sunday Brunch in the UK and CBS Sunday Morning in the USA. An advocate for kindness, David is working passionately to help inspire a kinder world.