Well since the point of this thread (is the worst way not to kill yourself, and not the worst way to almost die, or get hurt real bad. THe worst conventional way I can think of to make yourself die is to eat a lot of glass and die of eternal bleeding and infection along your digestive tract.
but a lot of people have been saying "the worst way to kill yourself.
If you mean "the worst way to kill yourself" I would say porobably eating right, regular excersize, no bad habits(drinking smoking ect), leading a low stress lifestyle, staying in good hygene, and getting all the correct vaccinations. Definatly the worst way to kill yourself.