I was advised to ask this as a separate question, and would suggest reading the related question and answers.
Suicide has only in the past decade or so received the attention it deserves as a serious health challenge to handle in modern day societies. A few years back, Prof Stephen Platt showed that the highest-risk group had moved from young adult males to men aged 35–55. Recent movements such as Movember Foundation and Suicide Prevention (Twitter: @GrassrootsSP) demonstrate that awareness that this is a problem and willingness to discuss it are recent positive changes.
For these reasons, I find it to no surprise that I've never heard anything about suicide and how to deal with and prevent it in martial arts circles, considering how these often are traditional, and once their teachings are written down, often not willing to update and expand their horizons. However, this could just as well be on my account, that I might not have researched it well enough. What, if anything, do the philosophical teachings of martial arts, in particular ITF taekwon-do, have to say about (the problem of mental illness leading to) suicidal ideation and/or suicide attempts and suicide?
As a taekwon-do instructor, I am particularly interested in what the ITF philosophy says about this, but the question, I believe, is relevant for all practitioners of all martial arts. I would prefer not to limit this question to ITF taekwon-do alone, but that would probably lead to thesis length answers rather than answers in the spirit of Stack Exchange. I therefore suggest that other martial arts' teachings are left to the comments, or in a separate chat room should this be fitting for the question.
I would highly suggest that a
mental-health tag is made selectable.
Prof. Stephen Platts original announcement, about the change in the high-risk age group towards adult and middle aged men in lieu of changes in work opportunities.