ANDY'S ANSWER: Go to the front of your telephone book. There should be a local suicide/crisis hotline there.
Or in the US you can call 1-800-784-2433 or in Canada 1-800-448-3000
http://suicidehotlines.com/national.html
http://suicidehotlines.com/canada.html
Talk to someone you trust... a friend, relative, teacher... anyone.
Suicide is NEVER the solution to ANY problem.