As much as I dislike pseudoscience, I do this too. Those exact words in fact. Granted, I have said them and missed lifts too, so doesn't always work but prolly adds a degree of intensity to it.
And it may not be all that pseudosciency; if you look at psychology principles such as classical conditioning, where hearing a familiar sound or sensation incites a response from the body, you can use it to snap yourself out of any lethargy, to get "in the zone" and ready to lift. Which is why so many lifters, amateur and pro, develop pre lift routines or lengthy setup procedures. As someone once said, the fitness industry is a breeding ground for OCD.