Katekuchichiku's question (1)

My first asking a question here. So, one of my close friends recently has been showing signs of suicidal thoughts.. or just giving up on life. I've been trying to comfort him and being sympathetic with him (genuinely) but it seems like it isn't working. He's the type of person who like, wants to stay on his "Happy-go-lucky" and "therapist" architype, and also a writer. I'm afraid that his own thoughts would do harm on him someday. I'm asking here because no one but me knows about his situation, and this site feels...very secure(?) with identities..

(Please pardon my English, it's my second language.) ╥﹏╥

Any suggestions?