When you are faced with a decision, you can consult your plan and determine which decision will help advance your plan best. Decisions made under the guidance of planning can work together in a coherent way to advance company or individual goals. Planning is useful in emergency situations, too. When a crisis arises, a little thought about the overall plan will help determine which decision to make that will not only help resolve the crisis but will also help advance the overall plan. Without a plan, crises are dealt with haphazardly and decisions are made which may ultimately be in conflict with each other.
Planning allows limited resources to be committed in an orderly way.
Their best use can be made when a plan governs their use. A simple example would be planning to buy a house or a car. Rather than having to decide between buying the item right now with all cash or never having it, you can plan to buy it over several years by making payments. Or, you might combine this plan with the plan to buy a smaller house and add rooms later as they could be afforded. By planning you can thus accomplish things that might otherwise look impossible.