To extend the metaphor, you must also keep the knife sharp. It's not enough to just practice and work hard and be intelligent. We must also be insightful into o

To extend the metaphor, you must also keep the knife sharp. It's not enough to just practice and work hard and be intelligent. We must also be insightful into our own lives as humans. At least in my life, my emotional and physical state impact my productivity more than anything else. Sometimes you will see a very dedicated, intelligent person flame out or they get into personal drama and cannot focus like they used to. For me, the answer is to workout 5 days a week and make time for family and women.