Most failed managers do not have or long-term plans for their business so they mostly rely on short-term plans on how they expect the business to perform but for a successful manager or true they mostly have short medium and long-term plans for their business and you will discover that with all this plans in place for the business the business to have a very successful continuity.The difference between the two is not something much to say but it depends on the ability of the manager to be able to run and perform it's duty effectively. even though some of the successful managers may have defects sometime but so minimal.