In “The Voice In My Head”, they needed a mentor to guide them through whatever they were struggling with.
Likewise, in real life, people may need mentors for various reasons. One reason would also be to guide them what they’re struggling with, or having a hard time coping with. If someone is having a hard time dealing with the loss of a loved one, they may need someone there for them to guide them through it.
You could also put it in the way of a fairytale. For example: A princess needed help finding her way out of a forest she got lost in. She meets a fairy and that fairy guides the princess out of the forest.
There are many examples as to why the mentors are important.
If the person dealing with their loved one’s loss didn’t have someone to get them through it, their mental health may have really gone downhill, and they would be very sensitive about the matter, their grieving process would take longer. If the fairy didn’t help the princess find her way out of the forest, the princess would have been lost for a very long time and may have a hard time.
The quote is talking about how government can sometimes be a mechanical, unfeeling force. This quote addresses the idea that the government can sometimes get so caught up in the politics of the job that they abandon the morals of humanity.