Leap before you look. No, don’t do that, but ready, aim, fire, isn’t always the best way to go. For one thing, you don’t know if your gun will shoot straight or sometimes you need to shoot a few times to get the hang of it. There are many instances when it pays to shoot first, then adjust as you go.
For example, if you get going and taking action you will learn as you go, instead of planning and planning and planning and never taking action. Or, maybe you plann and plan and plan, then take action only to find that you do not get the results that you were planning for.