The root causes are often unfixable. So you try to fix the other side of the equation.
Often it means adjusting unrealistic expectations. Like if I'm sad because I'm not a famous movie star. You could either make me a movie star, or make me accept that this is very likely not going to happen, and that's OK.
The root cause of that isn't that you're not a famous movie star. It's that you have so ordered your life that all happiness depends on being a famous movie star. There's parts of that equation that can be changed: teaching you how to have reasonable goals might be one of them.
Ignoring the fact that you're sad because you're not a famous movie star and giving you a happy pill is the inhuman step.
It's the old adage in spades: "Give someone a fish and they'll eat for a day; teach them to fish and they'll eat for the rest of their life."
Often it means adjusting unrealistic expectations. Like if I'm sad because I'm not a famous movie star. You could either make me a movie star, or make me accept that this is very likely not going to happen, and that's OK.
Nothing inhuman about that.