The mental health profession (with only a few scattered exceptions) isn't really there for our mental health. It's part of a vast system, which includes education and social work, whose only purpose is to preserve the societal status quo. This is why in many countries it's at least partially funded by the public treasury.
The average psychologist doesn't see it has his/her task to help you become happy, let alone self-actualized. Their task is more akin to that of a boxing-ring doctor: to get you up when you're down. That is to say, to alleviate your misery just barely enough, with minimal effort and cost, that you won't rope or go ER. A wise slave master gives his slaves just enough physical and mental care that this slaves won't die on him or revolt. But he also shouldn't overdo it, lest the slaves gain enough clarity and awareness to see the iniquity of the system they're in and leave the plantation.