His hands are too cold, and they feel to numb to start the fire.
Admiral McRaven took the abstract and overwhelming concept of “changing the world” and broke it down with a simple argument: Everyone can make a global impact by improving the lives of ten people. Give your audience measurable steps they can take today to put that inspiration into action.
The best way according to him is to make a good fence. The poem's final lines says that good fences make good neighbors. That can mean that if you stick your nose in your yard you will have good neighbors. Of course, this is all figuratively and refers to much greater things in life.