What are some must read books for people in their 20s?

The zahir by Paulo Coelho

money just in order to attain Nirvana

let me 1st explain you the title because when you read the book you might not understand . The title is named so because in the book there is no story though which writer wants to teach you something but the book is to the point and has 102 chapter all of 1to 2 pages where he teaches you how to live fully now when you are alive . He has literally covered everything .