Cutting, burning... anything to feel the pain, because you can't feel anything else.
WARNING: This board may contain material some might find upsetting or triggery. Posts mentioning specific acts or otherwise considered triggery are to be marked with that nifty skull icon (aka "Dead Ed"). Please read the full warning pinned at the top of the forum before posting. This board is for the express purpose of helping you get better. The romanticizing of self-injury is an offence punishable by a thoroughgoing stomping with the Big Stompy Boots of Stomping.
If you're suicidal and we suck...
Call a semi-pro. Find help in your area. Many countries and languages, most continents (nothing on Antarctica yet): suicide.org