M. J. Ryan is an author, speaker, and coach specializing in personal development, change management, and the psychology of happiness. She is widely recognized for her work on helping individuals and organizations embrace and navigate change successfully, particularly through her book "AdaptAbility: How to Survive Change You Didn't Ask For." Ryan has written numerous other books, often focusing on gratitude, generosity, and the power of positive thinking. Her approach combines research from the fields of neuroscience and psychology with practical advice to foster resilience, productivity, and overall well-being.