Long-term Investing: Rules of the Road

1.  Markets are often inefficient—but hard to beat

Mispricings exist, but exploiting them consistently is extremely difficult.
2. Survival > outperformance
Avoiding ruin and staying invested matters more than maximizing returns.
3. Time horizon is an edge—if you use it
Most investors claim to be long-term but behave short-term.
4. Risk = range of outcomes, not a single number
Think in probabilities and scenarios, not volatility alone.
5. Focus on what matters and is knowable
Ignore noise; concentrate on variables you can reasonably assess.
6. Extremes create opportunity and danger
Valuation and sentiment extremes are where the biggest mistakes and gains occur.
7. Macro forecasting has limited value
Diversification is more reliable than prediction.
8. Incentives drive behavior
Institutional structures and career risk shape investment decisions as much as fundamentals.
9. Most investing is performance chasing
Capital tends to follow recent winners—often at the wrong time.
10. Investor behavior determines outcomes
Discipline, patience, and emotional control are the real edge.

Bottom line: Build your strategy around endurance, discipline, and behavior—not prediction.