Top-down approaches are excellent for improving your vision, but there’s no weather at 50,000 feet! As you descend from these high, “planning altitudes,” they give no instruments for flying at “project altitudes” – through cloud cover at 10,000 feet, and the ground fog on the runway. Top-down approaches bog down during taxi, take-off, and landing on busy days. Getting Things Done is the “instrument training” that you need to stay on course – especially on those foggy days when life’s runway gets backed up. – David Allen