What other bodies and minds know and don't know, can do and cannot do, achieve and don't achieve, act/react and don't act/react, desire and don't desire, expect and don't expect, understand and don't understand, think and don't think, believe and disbelieve, like and dislike, agree and disagree, appreciate and don't appreciate, practice and don't practice, eat and don't eat, and how others want to live their life, are their freedom.
There's no judgment, or comparison, or expectation towards oneself and others, and between all and everyone who have different qualities of names and forms, condition, opportunity, experience, achievement, ability and limitation.
There's no superiority or inferiority.
One doesn't feel inferior, or admire/envy towards, or feel being intimidated by others who have higher qualities, condition, opportunity, experience and ability than oneself. Neither does one feel superior, or being proud and arrogant towards oneself has higher qualities, condition, opportunity, experience, achievement and ability than others.
'The yoga teacher' doesn't necessarily have to be someone who possessed/possesses higher qualities of names and forms, condition, opportunity, experience, achievement and ability than 'the yoga students', but, someone, or anyone and anything, or any names and forms, that allows 'this mind' to reflect, to look within, to inquire the truth, to have self-control and self-discipline, to be self-reliant, to realize, to be aware of ignorance and egoism in oneself, to annihilate ignorance and egoism in oneself by oneself, to be transcending all the selfless impermanent names and forms or the modification of the mind, and to attain self-realization towards the truth of selflessness and impermanence via self-effort, all and everything of different qualities of names and forms, regardless of superior or inferior/good or bad/desirable or undesirable/agreeable or disagreeable qualities, where all and everything are subject to selfless impermanent changes, are 'yoga teachers' to 'this mind', and above all, 'this mind' that is opened, and allowing all those teachings and practices to be happening, is the greatest teacher above all.
'The minds' that don't know this, will only in search for certain 'yoga teachers' who possessed/possess certain higher qualities of names and forms, condition, opportunity, experience, achievement and ability than oneself, with the intention or aspiration to be 'learning' and 'practicing' certain 'yoga practices of certain names and forms', in order to be able to also achieve those higher qualities of names and forms that oneself agrees with, likes, desires, admires, wants to possess and be identifying with. These minds are not free, including 'yoga teachers' and 'aspired yoga teachers', even though they might be attaining higher qualities of names and forms that they wanted to possess through practicing certain 'yoga practices of certain names and forms' learning from and practicing under the guidance of certain 'yoga teachers of certain names and forms', regularly and persistently, for many years.
'The yoga teachers' or 'the yoga students' who think and believe that, as 'the yoga teacher', they need to acquire and possess certain higher qualities of names and forms, in order to be able or be qualified to 'teach yoga' to others, still need to keep practicing until the mind is free from such thinking and belief.
Regardless of higher or lower/good or bad/pleasant or unpleasant qualities, all are subject to impermanent changes of decay, old age, weakness, injury, illness, pain, unpleasantness, cease functioning, death or decomposition.
Letting go attachment and identification, longing and clinging and chasing after towards any qualities of names and forms that are subject to selfless impermanent changes, is the 'yoga practice'.
Inquire the truth of everything.