Philosophy - Nietzsche’s Beyond Good and Evil - Nietzsche’s The Gay Science - Nietzsche’s Thus Spake Zarathustra - Kierkegaard’s Either/Or - Kierkegaard’s Fear and Trembling - Heidegger’s Being and Time - Machiavelli’s The Prince - Schopenhauer’s On Women

Career/Social - John Rolfe and Peter Troob’s Monkey Business - Dale Carnegie’s How To Win Friends And Influence People - Benjamin Graham’s The Intelligent Investor - John C Maxwell’s The 21 Irrefutable Laws of Leadership - Robert Greene’s The 48 Laws of Power - Robert Greene’s Mastery

I’d recommend any of these as they will challenge you intellectually and motivate you to overcome obstacles in your life.