Why haven't you changed? Why can't you truly feel happiness right now? The once little-known psychology master 'Adler' — his philosophy reborn in everyday language to answer our deepest struggles. We all want change. A freer life, a happier life, a more successful life than the one we have now. But we easily make excuses, and we easily give up. Take a moment to look back on your own life. Are you blaming the past — "I turned out this way because of him," "If only I'd been born into better circumstances, I wouldn't be living like this," "Just a few more years of enduring this and better days will come" — or putting off what you need to do today? Alfred Adler, founder of 'Individual Psychology,' which emphasizes positive thinking and has deeply influenced modern psychology, and known as the 'father of self-development' for his influence on figures like Dale Carnegie and Stephen Covey, firmly declares: "Human beings can change, and anyone can become happy." But to do so requires 'courage' — the courage to be free, the courage to be ordinary, the courage to be happy, and the courage to be disliked. What you need right now, if you want a free and happy life, is courage. Philosopher Ichiro Kishimi, who has studied Adler for many years, and acclaimed Japanese storytelling author Fumitake Koga present Adler's groundbreaking teachings through an innovative new format: a dialogue between a philosopher and a young man. Modeled after Plato's famous Dialogues, the structure reads almost like watching a play — engaging, dramatic, and full of life. Through these two books, known together as the 'Courage Duology,' readers will not only find answers about personal happiness but may also transform the very way they see themselves and the world. "Do you have the courage to be disliked?" A new classic of our time that shakes the foundations of our values! With a record-breaking 51 consecutive weeks at #1 on the bestseller list, over 10 million copies sold worldwide, and translations published in more than 40 countries, The Courage to Be Disliked sparked a global 'Adler' and 'courage' phenomenon. Together with The Courage to Be Disliked 2 — praised as surpassing the original with more concrete, practical applications — the series has sold over 2 million copies domestically and continues to be beloved by readers. In The Courage to Be Disliked, Adler speaks to the countless people who live constantly aware of others' opinions, delivering the message: "Reject the need for approval and live an autonomous life." All human troubles stem from relationships with others, he argues, and to become happy, we must free ourselves from the burden of those relationships. To do so, we must not fear being disliked by others. If we have within us the courage to change, the courage to move forward, and the courage to be disliked, our relationships — and our happiness — can transform in an instant. Taking a step further with more practical solutions, The Courage to Be Disliked 2 begins with the question: "I understand Adlerian psychology, but it's too difficult to apply in real life." In response, Adler offers realistic, concrete guidance centered on the themes of 'love and independence.' Love, he says, is not something you fall into — it is a 'choice,' and he urges readers to decide to love without hesitation. Just as all our troubles stem from relationships, so does all our joy. If we can learn to love first, we no longer need to anxiously seek love and approval from others — instead, we can become independent and truly happy. This 'Courage Duology Boxed Set' is the perfect opportunity to fully understand and apply Adler's philosophy — one that transcends conventional wisdom and opens the door to a new way of living. After reading both books, readers will be freed from their worries and empowered to lead a life of genuine freedom and happiness.