I listened to the audio book copy of “The Courage To Be Disliked” last year. It’s written as a discussion between a philosopher and a young man, about the concepts of Adlerian psychology, and there’s a great deal of real wisdom there. One of the key points, is that Adler considered all problems we face as humans, to be issues of interpersonal relationships. The more this is argued in the book, the more it becomes obvious that this is true.