I can't stand the waiting. I think I should turn myself in. Will I go to prison for a very long time?

I never threatened the guy. I only threatened myself. I sent him 11 e-mails in total. Too were only subject lines with no actual message in the body of the e-mail. All were short messages consisting of a few sentences. Most are apologetic about not being able to stop harassing him. One was angry at him but didn't threaten him in any way. He never replied back to any of them or requested that I stop e-maling him.

I think I should e-mail the police and turn myself in. I don't know what will happen to me.