Why Your Growth Strategy Fails: The 3-Horizon Validation Framework Your growth strategy passed the finance review. The board approved it. Your team is energized to execute. It will still fail. Not because the math is wrong—the Excel model looks perfect. Not because the opportunity isn't real—the market data checks out. It will fail because you validated it in only one dimension. Here's the uncomfortable truth: 67% of approved growth initiatives collapse within 18 months