According to the Substance Abuse and Mental Health Administration, these are the warning signs of suicide:
Threatening to hurt or kill oneself or talking about wanting to hurt or kill oneself.
Looking for ways to kill oneself by seeking access to firearms, pills or other means.
Talking or writing about death, dying or suicide when these actions are out of the ordinary for the person.
Feeling rage or uncontrolled anger or seeking revenge.
Acting recklessly or engaging in risky activities seemingly without thinking.
Feeling trapped, like there is no way out.
Increasing alcohol or drug use.
Withdrawing from friends, family and society.
Feeling anxious, agitated or unable to sleep, or sleeping all the time.
Experiencing dramatic mood changes.
Seeing no reason for living or having no sense of purpose in life.