Tim Ferriss' print sales fell 46% in 2025, and he suspects AI is the cause
AICopyLab · x · 2026-09-24
Tim Ferriss revealed that US print sales across his five books dropped 46% in 2025, with 2026 running another 57% below 2025 when he published his analysis in June. It's not just him: US print self-help sales overall fell 26.3% in Q1 2026.
Ferriss suspects AI is a major driver — why buy a how-to book when AI gives you instructions in seconds? He also shared a revealing anecdote: when he condensed The 4-Hour Body into a handful of instructions for friends, none followed them, while many full-book readers reported actually changing their behavior, suggesting complete narratives drive action in ways fragmented AI answers don't.
The sales figures alone can't prove causation, but the question is the right one: the knowledge-selling business is being directly hit by AI.
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