Here is my view on suicide, first of it is damned narcissistic. Second off, suicide is the ultimate act of shallowness.
Easiest and painless, I doubt that really helps on the other side, announcing, before entering the borderland, clear the way, here comes a wimp! Best way to die, I can guess at though. Do something wildly brave and helpful instead.
Here is a goofy thing to do to get yourself killed. Try actually following the teachings of Jesus. He pretty much promised persecution without limit if you do. I doubt society will let you last long if you do, and you will learn something that few of us ever will. Sure a lot of folk say they are Christians, but really putting others first while abandoning the pursuit of personal gain is not something society at large will put up with for long.
Seriously, you waited in line for this, got a reservation. prepared and planned for this. probably 1000 others would have been happy to eat at this table instead of you, and because of a spot on the table or a dirty fork, you want to have a fit and stomp out. They are never going to let you back into the restaurant. Sure a lot of the stuff on the menu is really horrible, but you knew that coming in. You have probably forgotten, but you helped plan this mess.
So the next time you are feeling left out dancing because your soul doesn't glow all bright, and you decide to clean up and incarnate again so you can hang out with the bright ones, where are you going to be in line? Any bum who at least sticks to the endless karma yoga will be able to bump you. The half decent bad incarnations will be taken. Seriously for an immortal luminous being, 100 years of torment is a hang nail. Here is a community of Tao folk, being asked how to kill yourself. What a waste. These are the folk to ask how to resolve ills, cure the incurable, and bring joy into your life.
If you are really looking for suicide, I will admit I don't deeply understand deep long term depression. I will admit I don't know what is going on in your life, and it would not be at all surprising if most the people around you cared more about themselves than they do you. If you are considering suicide, then you probably care a lot more about yourself than everyone else put together, and that is not a lot. I have been there to pick up the pieces after a suicide and a murder suicide. I have two sets of adoption papers to prove it. Suicide really sucks from my point of view.
Personally I am looking forward to death. There is a lot I want to know. But right now I am trying to get and give as much as I can from life. The day that I cannot do anything for my fellow man, I may start practicing biofeedback and pass on from this mortal coil. I won't be throwing karma around by asking others how to do it. Till then I may scream on the drops, and throw up on the corners, but I plan to enjoy this roller coaster.