Concept
Long-Term Games
2 books in the library reach for this idea - each in its own way. When independent authors converge on one concept, it usually deserves attention.
The Almanack of Naval Ravikant
How this book uses it: Play long-term games with long-term people. Compound interest works on relationships too.
The Pathless Path
How this book uses it: Investments (relationships, skills, reputation) that compound over decades. The pathless path favors these over short-term wins.