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Most persons thinking of suicide want help to stay alive.  People thinking of suicide find ways to invite help from others.  Invitations are often missed, dismissed or avoided.  The best way to find out if someone is thinking of suicide is to ask directly.  Asking directly about suicide will not give someone the idea.  Avoiding direct and open talk about suicide is not helpful and could be dangerous.  Anyone could have suicidal thoughts.  Everyone can learn how to help.