The Road Less Traveled by M. Scott Peck - great insight into the human condition One Minute Manager by Kenneth Blanchard and Spencer Johnson - concise and pith

The Road Less Traveled by M. Scott Peck - great insight into the human condition One Minute Manager by Kenneth Blanchard and Spencer Johnson - concise and pithy while containing lots of useful pointers The Divine Center by Steven Covey - the spiritual grounding that informs his later more secular books and much more interesting if you don't mind religious thought mixed in with your motivation The Foundation trilogy by Issac Asimov - Caused a huge detour in my life. Immersed myself in speculative fiction for decades due to the brain-quake caused by this material. Stranger in a Strange Land by Robert Heinlein - A detour of a different sort. Great introduction to alternative modes of thought to my uncultured religious teen mind. LDS/Christian Scriptures - regardless of your belief level, the ideas/thoughts/stories/literature encompassed in scripture is enriching to the mind