Public Speaking Alcohol How Do You Beat Nervousness?

How do you beat nervousness? - public speaking alcohol

I have to recite a speech at a conference. I am the quietest in the world, not only as a public space. Whenever I do, I:
1) Remember my lines
2) Stutter
3) so nervous
4) I can not speak

How to solve this problem? (And do not say. Alcohol Believe me, I did it before, and it was not pretty)