Nebaska, I'm sorry for how you are feeling. I understand the feeling; as most everyone here does. But the pain will fade and end, without your life fading and ending. There are an awful lot of witnesses on this thread to testify to that, at least, including me.
"As long as there is life, there is hope". Can't remember who said that, but I've always believed it, and it has always proven true for me. If you have to change something in your life - even something huge - then change it. You have no idea the things that can be waiting for you around the corner. No idea.
As for your monastery idea, sometimes we need something like that... to take a break and get our heads in order. I think you should first talk to someone, in person, who understands pain and thoughts of suicide. Many suggestions have been given, and I hope you follow them. But if you are at the point of no return, and you need to escape for a while (3, 6, 12 months?) to get your head in order and perhaps find some inner peace, then do what you think will help you find that. Change something... so you still have life, and so you still have hope.
Peace to you,
Tammy