Heidi Grant Halvorson, Ph.D., is the Associate Director of Columbia's Motivation Science Center, and author of "Focus: Use Different Ways of Seeing the World for Success and Influence," "Succeed: How We Can Reach Our Goals," and "Nine Things Successful People Do Differently." She is also a contributor to The Atlantic, Huffington Post, Psychology Today, Harvard Business Review, Fast Company, and Forbes, where she writes about goals, achievement, relationships, and finding happiness.
