The positive vision is the mission statement of the company. A mission statement always devoted to companies' beliefs. It's attached to customers as well as the employees of the company. You must understand the mission statement of your company because it indicates the priority of your company.
Sometimes, The worst mission statements are "Want to become the most profitable company across our industry", "Want to become the world's largest market" or a lot of examples are there.
A vision is nothing but gives your employees to see where their company is.