Not gonna tell you how to do it, but a warning if you are going to anyway.

Most people make the mistakes of just hanging themselves and being strangled to death.

THis is the most unpleasant way to die possible, You will shit and piss your pants as a reflex, aswell as gain an erection and ejaculate...Nice.

the PROPER way to be hung is so that your back/neck breaks INSTANTLY when the rope goes taught.

Most people dont realize this and just drop off a stool or something. REALLY stupid.

I can think of much less painfull ways to die.
((If you're that intent on doing it, but suicidal feelings dont last forever.)