Well there are a lot of easy ways, the methods listed on the resources page detail a lot of quick, relatively painless, and reliable methods that can be done in an afternoon for the price of a few meals out. And a lot more methods if you're creative and don't mind thinking out of the box.
If someone is serious about wanting to really leave they'll try anything, and usually fail the first few times because "anything" unplanned rarely works, once someone really cares about succeeding they'll make a real plan with a reliable method.
The only thing keeping me here at this point is me, the methods are easy, the cost is affordable, I have no excuses why I'm still here. I say it's for friends and family, but I'm pretty sure I'm just afraid to die and afraid to face the unknown.
Ask yourself the reasons you're still here, I'm sure there is something. Maybe it's just fear of death like me or a strong survival instinct that you have to overcome first. Once you solve the things holding you here, and have a clear plan, there isn't much else to stop you.