The fundamental qualities for good execution of a plan is first; intelligence; then discernment and judgment, which enable one to recognize the best method as to attain it; the singleness of purpose; and, lastly, what is most essential of all, will-stubborn will.
It's funny: I always imagined when I was a kid that adults had some kind of inner toolbox full of shiny tools: the saw of discernment, the hammer of wisdom, the sandpaper of patience. But then when I grew up I found that life handed you these rusty bent old tools - friendships, prayer, conscience, honesty - and said 'do the best you can with these, they will have to do'. And mostly, against all odds, they do.