Four Days to Change: 12 Radical Habits to Overcome Bias and Thrive in a Diverse World by White Men as Full Diversity Partners co-founder, Michael Welp. Based on twenty years of pioneering workshops engaging white male leaders in transforming their own mindsets, building leadership skills, and creating powerful partnerships at work and at home, Four Days to Change is a unique fly on the wall experience for many of us as it follows a group of white men embarking on a life-changing experience to broaden their view of the world on pressing issues of our times related to race, gender, and sexual orientation.