[watwut]

Some suicides are after long rumination, others are momentary impulse. Sometimes triggered by psychosis, bout of paranoia, manic phase, PTSD or something other of the sort acting out. There are people who have multiple suicidal attempts, but from what I recall from stats many try once and that is it.

Following may be biased sample, but when I read mental health forums a while ago there were people who wanted to try suicide in the past and were glad it did not worked out.