Adir Shiffman was a Medical Doctor that couldn't stand the mundane. At medical school he started businesses, and he's had enormous success with almost everything he's touched.

He's Executive Chair of global business Catapult Sports and he knows a few things about scale, growth and strategy.

His advice is incredible: if there is a wall in front of you, run as fast as you can at it. Hopefully you work out how to get over it before you go SPLAT! Better still, "don't amputate your toe, amputate your foot"