Mediocre is just good enough and fits the mold. You shouldn’t expect too much in terms of ability, performance, or quality. It looks the part but there may not be much under the hood. Average is ok.
Increased levels of performance and higher levels of quality are foreign and require more effort. To get here you must be willing to accept more risk. Failure becomes possible.
Pushing beyond average means be willing to accept more of the “ups” along with the “downs”. You learn to take the good with the bad.
As performance or profit increases then you redefine what it means to be average. This is growth.