Ryan Holiday Collection 4 Books Set The Obstacle, Ego,The Daily Stoic,Perennial  1) The Obstacle is the Way: The ancient art of turning adversity into opportunity Format: Paperback  Publisher: Profile  Language: English 1784706280 - ISBN-10 978-1781251492 - ISBN-13 9781781251492 - ISBN-13 2) Ego is the Enemy: The Fight to Master Our Greatest Opponent  Format: Paperback  Publisher: Profile  Language: English 1781257027 - ISBN-10 978-1781257029 - ISBN-13 9781781257029 - ISBN-13 3) The Daily Stoic Format: Paperback  Publisher: Profile Books Language: English 1202221777 - ISBN-10 978-1202221776 - ISBN-13 9781202221776 - ISBN-13 4) Perennial Seller: The Art of Making and Marketing Work That Lasts Format: Hardcover Publisher: Penguin Random House USA Language: English 0143109014 - ISBN-10 978-0143109013 - ISBN-13 9780143109013 - ISBN-13