If they’re telling you what you plan to do is impossible, prove them wrong. If they’re telling you you’re foolish, prove them wrong. If they’re busy pointing out the obstacles you’ll face, use your time planning how to overcome each of the obstacles. Don’t listen to fools. Don’t listen to the fraidy cats, don’t listen to those who are busy painting the blue sky black. You know the sun is shining. You know you’ll make it to the mountaintop.