We all get corrected. Looking back on my life, the correction almost always came from someone who cared about me. We have choices on how we respond to correction:
We can accept it with resignation;
We can accept it with self-pity, thinking we don’t deserve it;
We can be angry and resent or blame the other person or
We can accept it gratefully.
The other person cares for and believes in us. If you can learn it as a young musician, it will benefit you for life.