Your business is the result of your vision. However, no vision can be realized in a vacuum. The minute you bring your business to the real world, you need to open your ears and your mind to input. This input will come from all quarters: board members, customers, employees and partners. All of them have a stake in your business and all of them bring a unique perspective to its operation. This input is essential, and your success depends on you weighing every opinion. When you disagree with that input, listen even harder. Chances are you’ll be able to glean value from even the most strident criticism.