Here's one of the shortest definition of planning based on a business and economic perspective. "Planning is essentially a process directed toward making today's decisions with tomorrow in mind and a means of preparing for future decisions so that they may be made rapidly, economically, and with as little disruption to the business as possible." Unplanned growth will be haphazard and may fail to provide desired levels of profit. Is your business well-planned out? source: excerpt from Subhash Jain
Well,planning is must for all type of action i will take. I know this because without planning i will face many problem afterward. Beside planning,my experience have teach me to have a backup plan if somehow the A plan failed to achieve the initial target.