Imagine you're at a party with a drink in hand. You step out onto the patio and slip on a patch of ice, but catch your balance and stay standing, drink unspilled.
There's no need to self-talk through that situation; in fact, things happen so fast that we only realize what's happened after it's over, yet if we're in good health we realize it while remaining standing, courtesy of our subscious mind - our Zombie mind.
Have you ever tried capitalizing on that? One way would be to train specific situations until they become subscious. I think most MAs do that in some way or another. Where you place the emphasis within the situation will determine what your zombie learns, though. Training specific moves into subconsciousness is different than training specific mindsets into subconsciousness.
A Chen master has this great simile relating to what he trains the zombie for (I'm paraphrasing):
Mastery of Martial Arts is like play-fighting with a child. No matter what the child does, you don't feel threatened, and you can deal with whatever they throw at you subconsciously. You don't have to think about doing this move or that move. There's no concentration, no self talk needed.
Back to the self-talk: if it's being used, then may I suggest moving along the imperative line from "technique" to "target" and eventually to "result."
Get it to hit by itself! Train that Zombie!