one more light

My job is to watch over those who have no more will to live and try to save them from themselves. Meaning I have to convince them not to kill themselves, but I am not allowed to reveal my true self to them and can't intervene if they still want to end their life. Whenever I fail I feel their own death as if I'm the one actually dying and have this guilt of not being able to bring them back from that low part of their life. I know that I won't be able to save everyone from that dark point but that doesn't stop me from doing my best and trying my hardest to prevent it from happening. As I have my duties, there are also dark forces who are trying to make the people want to end themselves even more. I haven't encountered one of them yet but I have heard that they are very dangerous creatures Who hide out in the dark and cannot touch the light.