Attempted many times, only a threat to succeed twice that I can recall. Once by taking a handful of vivarin and asprin (caffeine and blood thinners, yum yum) before going to work; once through really severe self-injury (oh, that was fun...).
I mostly lived with the intent to die- next to no sleep, continuous caffeine overdose, diet pills, starvation, moderate yet constant self-injury... but never booze or drugs.
Can't say I don't still flirt with that lifestyle pretty consistently. But at least I have reasons to live, now. I can actually picture a future for myself where I'm a useful, productive, happy person.