In 2009, when 'Sully' Sullenberger ditched Flight 1549 in the Hudson River, he saved the lives of 155 people. He also, at that moment, had absolutely nothing on his mind. They all would likely have died if he did.
Serious martial artists know why.
The second step in practice gets a little... esoteric.
Now that you have a perfect block internalized, you need to connect it to the punch heading for your nose. Not as easy as it sounds. Things, like thinking, get in the way.
What you need is a state of mind that allows a perfect block to react directly to one of an infinite number of variations of punches to the nose - and in real time to boot!
To do that, you'll need to master concepts with names like Mind of No Mind, Mind Like the Moon, and Mind Like Water.
An ancient Chinese book, the Zhuangzi, helps. It doesn't tell you how to accomplish those feats, but it does tell you ways to know when you do!
If this sounds like a lot of effort, remember, your nose is involved!