We've all experienced failure. Yes, we need to be careful with our word choice and some might not agree with labelling something as a "failure" as there's always lessons to be learnt. However, for me, acknowledging that sometimes I don't meet a goal and it doesn't threaten who I am, is the biggest lesson.
The important thing is how you bounce back. Does it break you or does it make you stronger?
The ones who stop and give up will try to transfer this attitude to you when they see you pushing boundaries and breaking norms. It threatens their safe life choices and makes them question living small. Maybe it brings up remnant feelings of their past challenges. They'll question you. Point out the risks. Recognise this for what it is and don't accept the transference of feelings.
Why would you let someone else's past failures dictate your future? Do not let others' limiting beliefs stop your adventures before they start. Don't let their broken heart stop yours from singing. #brainbodymind