Here are some free hotlines:
National Suicide Prevention Lifeline 1-800-273-TALK (1-800-273-8255)

Yellow Ribbon Suicide Prevention Program 1-800-SUICIDE (1-800-784-2433)

Suicide & Crisis Hotline 1-800-999-9999

National Adolescent Suicide Hotline 1-800-621-4000

The Trevor Helpline (specializing in gay and lesbian youth suicide prevention) 1-800-850-8078

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Actually, those seem like pretty good coping ideas to me. I am not in a good position to give advice about S.I., but what I do to calm myself down is go for a run or bike ride, bake something (sometimes myself! ), or end up here or at another one of my internet forums.