1. **Use the 80/20 Rule:** Identify the 20% of activities that lead to 80% of your results. 2. **Have "strong beliefs, loosely held":** Update your beliefs based on new evidence. 3. **Master learning with the Feynman Technique:** Teach others, identify gaps, and simplify. 4. **Ask "Why?" 5 times** to get to the root cause of any problem. 5. **Apply second-order thinking:** Consider future impacts by asking, "What comes next?" 6. **Use Occam's Razor:** Prefer the simplest explanation that fits the facts. 7. **Be data-driven:** In the words of Peter Drucker, *"What gets measured gets managed."* 8. **Invert problems:** Growth also comes from avoiding mistakes and bad habits. 9. **Adopt probabilistic thinking:** Weigh decisions based on likelihood and risk. 10. **Understand opportunity cost:** Consider the next best alternative you're giving up. 11. **Practice steel manning:** Argue against the strongest version of opposing views. 12. **Master compound growth:** 1% daily improvement leads to 37x growth in one year.