Good one. A big problem is the stigmatization of talking about suicide, including the knee-jerk reaction that it's always to be avoided. Sometimes the best way to avoid suicide is to say "maybe" to it. Then you don't alienate people seriously considering it.

What I'd recommend is to tell people that they can do it, but first give life an honest shot. No excuses, go all in at fixing whatever is keeping you down. Take all the counseling, do all the effort, take all the risks, for one year. After that, if nothing's better, go ahead and do it. Just that "what have I got to lose" all-in shot is going to fix 90% of cases.