The question is too broad, regardless of the intentions for using the answer as a link-point when closing other questions.
There is, at the moment anyway, a general sense of consensus that these type of questions, depression and suicide, ought not to be answered by anyone in any manner other than to direct the OP to a canonical response of seek professional help, and then close the question to prevent any answers to the question.
From a variety of discussions, in Meta, in chat, and in comments to posts on both main and Meta, the linked to response, the canonical response, should be on Meta, not the main site. The closure of the question should be with a custom close message that links to the canonical response.
A common concern is what a new seeker will find at the end of a Google search, specifically whether or not the search result will lead to a page that covers all conditions of depression and suicide advice for the seeker, and for someone the seeker knows.
I am not proficient at creating the needed text, but I am sure there are other active users who can do so with the proper style, tone of voice, and search engine juice. So my thinking is that we need to create a total of eight questions, and four answers.
- Meta site question: What is the proper response to questions seeking advice from someone who is suffering from depression?
- A carefully worded "answer" that says find a mental health professional to talk to that is worded such that a seeker in this situation will likely be prompted to make the proper connection to a mental health provider.
- Meta site question: What is the proper response to questions seeking advice from someone who is (apparently) suicidal, or thinking about suicide?
- A carefully worded "answer" that says find a suicide prevention hotline to talk to that is worded such that a seeker in this situation will likely be prompted to make the proper connection to a hotline.
- Meta site question: What is the proper response to questions seeking advice from someone who knows about another who is suffering from depression?
- A carefully worded "answer" that says tell them to find a mental health professional to talk to that is worded such that a seeker in this situation will likely be prompted to help the other person they know make the proper connection to a mental health provider.
- Meta site question: What is the proper response to questions seeking advice from someone who knows about another who is (apparently) suicidal, or thinking about suicide?
- A carefully worded "answer" that says tell them to find a suicide prevention hotline to talk to that is worded such that a seeker in this situation will likely be prompted to help the other person they know make the proper connection to a hotline.
- Main site question: How can I deal with/overcome my depression?
- A comment linking to Meta site question #1, and/or
- Closed, and locked, with a post notice that links to Meta site question #1
- Main site question: How can I deal with/overcome my suicidal thoughts?
- A comment linking to Meta site question #2, and/or
- Closed, and locked, with a post notice that links to Meta site question #2
- Main site question: How can I help my friend deal with/overcome their depression?
- A comment linking to Meta site question #3, and/or
- Closed, and locked, with a post notice that links to Meta site question #3
- Main site question: What do I do if someone I know is feeling/acting/talking suicidal?
- A comment linking to Meta site question #4, and/or
- Closed, and locked, with a post notice that links to Meta site question #4
Later, whenever a new question is posted that resembles one of the Main site questions above (#5 - #8) it is closed as a duplicate of the one it matches. Maybe a comment is added that matches, or is a direct copy of, the comment on the that is the dupe target. That gives the instant OP a direct link to the canonical response as well as anyone that lands there from a search engine result.
This puts the canonical responses squarely in Meta, where SE custom places such canonical material. It creates a Main site question that links to the canonical response in Meta that is appropriate for the question. It provides for the possible use of a custom close reason on the four "crafted" questions.
A dupe target is provided for all future questions that match any of the four situations we have envisioned. It remove the need to use four of our limited set of custom close reason slots, allowing us to use them for other, probably more common needs.
Having never seen the inside of the mod tools, I have probably set up something that isn't totally correct with what can be done. Following the spirit of this plan, using the actual tools available, should still be workable, however, with some fine tuning as needed.