When I was a kid, I used to ask my mother if I could make a snack to eat. She always replied "no." No matter how nicely I asked, the answer was "no." One day, I tried a different tactic.
"Mom, I'm going to make a snack, do you want anything?"
She replied "no."
When in my first management position, I learned a secret that many managers have learned before me: it's easier to ask for forgiveness than to ask for permission. Constantly, I would ask the district manager if I could do "foo" and he would reply "no". Later, I just started doing things without asking and he would complement me on a job well done.
Okay, lesson learned. When I'm under the gun, I'm going to get things done.