To my way of thinking, Sharp has written the quintessential pop psychology, self-help book. That's not necessarily a bad thing. His basic premise can probably best be summed up in the quote “Not all who wander are lost” from J.R.R. Tolkien's The Fellowship of the Ring, which Sharp incorporates in the text along with other familiar sayings, tropes, and cliches. He encourages readers to push their limits, get out of their comfort zones, and even be willing to take physical, mental, and emotional risks to experience a more fulfilling and meaningful life.
Sharp challenges his readers to get lost, as in literally leaving the hiking trail or taking a drive to unfamiliar places without GPS, but he also advocates for deliberately dismissing goals, objectives, plans, schedules, etc. when they become restrictive and cause us to miss opportunities. He firmly believes that this unconventional approach is essential for good mental health, and as a highly regarded therapist and writer who has suffered from depression and anxiety and even attempted to take his own life, his arguments can be quite convincing.
Along the way, Sharp discusses methods of dealing with anxiety and phobias that are directly related to the theme of this book: getting lost to really find yourself. He goes into some detail about building up mental and emotional immunity similar to the way the human body builds immunity by exposure. He gets redundant at times, but a lot of what he proposes makes sense to me. Unfortunately, he feels the need to toot his own horn too often regarding his educational and professional achievements, and although he attempts to justify why he does so every time, it gets a bit tiresome. Otherwise, this is an interesting way of justifying the modern adage of "thinking outside the box."