When it comes to being able to execute a plan, I find you only really have two options.
The Shot-Gun or the Sniper approach.
Shot-Guns - Don't require much planning. Spray and pray. Sometimes you hit your target, sometimes you don't. At least you hit something right?
But are random acts of improvement the best way to increase your success? My guess would be - No.
And then you get snipers.
Snipers - Approach things a little differently.
Like a chess game you have to see at least 3 to 4 moves ahead and anticipate what will happen next. Watching your environment, studying your target, adjusting for wind speed. All while the war wages around you.
Sometimes however, you can use both methods to your advantage. But almost always, it's better to execute your strategy as a sniper.
How do you execute as a sniper? Practice, plan and shot. Then do it again, and again and again. Until you get better at it.
Keep shooting until you hit the target - Every-time!