For more than fifty years, the mountains have been my classroom.

I've been a climber, backpacker, mountaineer, and lifelong student of endurance, spending decades learning not just how to perform in the mountains, but how to build the kind of athlete capable of returning to them year after year. Over time I came to realize that the most valuable lessons weren't about reaching a summit. They were about attention, consistency, recovery, patience, and the quiet practice of showing up every day.

After a hip replacement, I found myself asking a different question. Instead of wondering how quickly I could get back to climbing, I began asking what kind of athlete I hoped to be twenty years from now. That shift in perspective changed the way I approached training and ultimately became the foundation for The Practice of Endurance.

While writing that book, another question began to grow. Why do we think the way we do? How does experience shape perception? How do awareness and attention influence the choices we make every day? Those questions eventually became The Invisible Algorithm, a book that explores the hidden learning process behind our thoughts, habits, and decisions.

Although one book is rooted in physical practice and the other in philosophy, they are connected by the same underlying belief: meaningful change happens gradually. Small choices, repeated consistently over time, shape both the athlete we become and the person we become.

When I'm not writing, you'll usually find me training, climbing, or exploring the mountains of the American West. I continue to test these ideas on rock, on trails, and in everyday life because I believe the best ideas should be lived before they're written.

My hope is simple: to encourage others to build a life that remains adventurous, curious, and capable for decades to come.