Don't fly into a cell when everyone else is taking vectors around it. Don't perform an emergency landing and tell the aerodrome and cabin crew that it's nothing to worry about. Don't jerk the stick to the stops and back in direct law. Don't continue an approach when predictive windshear calls for go around 2.5 times. Don't continue an unstabilized approach. Don't ignore the "Glideslope" warning approaching decision height. Don't bunt into the runway. Don't respond to a bounce with full ND deflection. Don't talk to the press after doing any of that and people die.
Any other lessons here?