There is too many scans to post from this example but there is a direct comparison of his dynamic power in Adventures of Superman #430
Superman faces the fearsome five, the fearsome five are actually capable of defeating Superman.
Superman looks bad getting defeated by this 5 , but He just can't stop them, no matter how hard he tries.
Superman realizes he is having issues in his life and how his Superman persona is interfering in his life as Clark Kent.
He talks to Pa Kent and Pa Kent gives him a pep talk
the very next day Superman faces the fatal again, but this time he claims that he is ready to face them and that he has no personal issues anymore, that He knows WHO HE IS and that He is willing to accept his role or some crap like that.
Superman defeats the Fatal five rather easy, where the fatal five even used basically the same type of attacks on him
I just re read that issue maybe like 3 months ago, but unless I forget something, pretty much it shows how Superman powers work with his mind.
There is also that Mogul JR example where he had that power surge