While many of us often find excuses for not doing something we’d like to do because it seems impossible, the guest on today’s episode of Talking Books has a mind-set focused on why she should do something daring and impossible. CNBC Africa’s Jill de Villiers speaks to businesswoman, athlete and adventurer Lee Den Hond, about her book: What Happens when you say yes: Altitude, Attitude and a Greater Purpose; How to Live a 100% Life….