According to these resources, Duke’s framework relies on several mental shifts: thinking in bets by annie duke (summary) — - Haley Bryant
: Unlike chess, where all information is visible on the board, life (and poker) involves hidden information and luck
(Also, I couldn't find a direct PDF or GitHub link for the book. If you're interested in accessing the book, I recommend checking out online libraries, bookstores, or purchasing a copy directly from the publisher.)