Give this guy a break. People come in here asking for methods all the time while they're desperately seeking relief. He wasn't doing it out of malice, so I think a more forgiving attitude is appropriate.
You can't ask for methods. But I'm allowed to tell you that anything you think of is likely going to fail, and most likely has a chance of causing you permanent damage. Maybe brain damage, maybe paralysis, maybe chronic pain, it can be a variety of things that result from a failed suicide attempt. Suicide is generally a bad idea in part for this reason.
Still, I won't argue with you in the slightest about choosing suicide as your solution to whatever insolvable problem you're currently in the midst of. I always tell people that suicide is in fact an option to solve problems, albeit a very messy one, with many serious consequences you might want to consider. I like to give people a chance to plead their case, and if no one can come up with any better solution than suicide, then no one has the right to argue with you. You're not alone in thinking of suicide to solve your problems. Suicide exists as a solution, and many people take it. The only problem is that many people take it without considering the consequences while they're still in the right state of mind.
So, what's going on?