is none of your concern.
i think the quote is actually: what others think of you is none of your business. I halfway agree with that. sometimes, it might be your business...to know if someone isn't particularly fond of you. Then you have a signal to keep your distance and maintain careful boundaries with that person--especially if you genuinely liked them and you thought they were truly your friend. on the other hand, what the statement is really going for is that at the end of the day...it doesn't matter what people think of you. the emotional weight of others' opinions...shake it off.
what YOU think of you matters. and further, the choices you make, the actions you take--that matters even more. not someone's opinions. not someone's presumptions.
this is a helpful thought to hold onto--should you be second guessing yourself, should you think you're not making the right decision. you make your decisions based on the information that you've gathered or from what's right in front of you.
it's different, i think, when you are seeking out opinions from the
people closest to you, from the people you respect and look up to. but
for the rest who offer their opinions/judgements unasked, who may be
peripheral someones in your personal orbit, i do my best to clear out
the 'noise' and make room for what matters.
i learned that getting bent out of shape over other people's opinions merely gets in the way and becomes an obstacle to doing what is most important--taking charge of my life and creating a positive space for my children (and me).