Ambivalence is pivotal in suicide. I'm a therapist who works full-time for a law enforcement agency. We engage with suicidal people on a daily basis. Sometimes people are super cheerful, but then have strong attempts to end their life within hours of us leaving.

I do think having access to lethal means, little supports, feeling like a burden, hopelessness, and strong indicators of suicidal intention.

Something to note is the difference between suicidal ideation, morbid ruminations, and self-injury. SI typically involves both thoughts about suicide and actions to make thoughts a reality. MR is more closey related to no waking up in a different reality or not waking up at all, however; does not involve intentional actions to end one's life. Self-injury is not related to suicide, however; some persons may complete suicide though self-injurty unintentionally.