Unprofitable Pessimism is a self-help book written by Orison Swett Marden. The book aims to help readers overcome negative thinking and embrace a positive outlook on life. Marden argues that pessimism is a destructive force that can hold individuals back from achieving their goals and living a fulfilling life. He provides practical advice and strategies for overcoming pessimism and cultivating a positive mindset. The book covers topics such as the...