Part of achieving success as an artist is having the right training. Having the right training means you have mentors. The best mentors will help you achieve your maximum potential in a way that is demanding without being condescending.
In vulnerable states, artists may rely on their mentors to get them through the roughest patches. If this vulnerability becomes manipulated, it crosses the line into unhealthy.
Your teachers helped you reach great heights under their tutelage and may have believed in you when it seemed nobody else did.
It’s all great until it isn’t. Fifty great things your mentor has done for you cannot outweigh one very bad thing they have done to you.
The effect teachers have on students lasts a lifetime, the good and the bad. If it doesn’t feel healthy, walk away, and cherish the ones that push you to your best and catch you when you fall.