Stress tolerance, resilience, mental toughness... call it what you will. There is much research to suggest that 'grit' is the differentiator between those who succeed and those who don't. Often through our executive coaching programmes, we deal with strategies to increase resilience in the face of no-win decisions, volatility and constant change. It's not easy, and there's no 'one size fits all' but here's a few tips to stretch your mental toughness muscles.