Increase caution precisely when others become reckless and opportunity emerges

Howard Marks: How I Mastered the Markets - My Advice From 50 Years of Investing · Howard Marks

Making small, reversible decisions that move toward the goal without over-committing, allowing continuous assessment and adjustment as new information emerges

Leadership Strategy and Tactics · Jocko Willink

Identify the excuses you have constructed to avoid life's tasks, and recognize them as chosen self-deceptions rather than objective truths.

The Courage to Be Disliked · Ichiro Kishimi and Fumitake Koga

Timeless wisdom for investors

The Bogleheads' Guide to Investing · Taylor Larimore, Mel Lindauer, Michael LeBoeuf