The kind of resentment you’re talking about is universal. Found in any field of discipline—from doctors to teachers, construction workers to bloggers. Anyone who is a slave to their pride will resent another person telling them what to do.
It’s all over the place. The antidote is humility, and true humility has only one source.
As far as LCSW’s and psychologists being the backbone of mental health—I’ve heard of these kinds of therapists practicing necromancy during the session. Psychiatrists wouldn’t touch this kind of thing. And many if not most therapists impose on their patients Buddhist religious tenets disguised as standard therapy (known as “mindfulness”).