Learn and stay alert for common warning signs of suicide or suicidal thoughts:

Talking about suicide — for example, making statements such as "I'm going to kill myself," "I wish I were dead" or "I wish I hadn't been born."
Getting the means to attempt suicide, such as buying a gun or stockpiling pills.
Withdrawing from social contact and wanting to be left alone.
Having mood swings, such as being emotionally high one day and deeply discouraged and irritable the next.
Being lost in thought about death, dying or violence.
Feeling trapped or hopeless about a situation.
Increasing the use of alcohol or drugs.
Changing the normal routine, including eating or sleeping patterns.
Doing risky or self-destructive things, such as using drugs or driving recklessly.
Giving away belongings or getting affairs in order when there's no reason to do this.
Saying goodbye to people as if they won't be seen again.
Having personality changes or being severely anxious or upset, particularly with some of the warning signs above.