I realy like this quote from baseball pitcher Jason Marquis, talking about Tony LaRussa, Manager of the St. Louis Cardinals:
"One thing Tony (La Russa) always preached over there was execution and minimizing mental mistakes. You don't have to have the most talented team to do that and it doesn't take the most talented team to win."
In baseball and in work I think this is true. It's similar to this quote from Mike Ditka:
"Effort without talent is a depressing situation....but talent without effort is a tragedy."