The moment you truly see fragmentary thought / impulse for what it is, it is no longer an active part of your mind. This is not a gradual process, but an instantenuous and fundamental shift – a flash!
But, who/what is the entity that sees?
A mind incorporating fragmentary impulse cannot possibly see itself – thought cannot contemplate the nature of another thought. If you try to see / make it happen, it won’t. Trying will block it.
So, the part of the mind that sees has to be outside the space occupied by thought. This part is primary – it is already there, underneath the noise. It has always been there. Just stay back and let it work through you …