Opting out of life forever more darkness wins?

I am very very tired. I consider myself to be a good decent person who works hard, goes more than the extra mile to do things right. It no longer matters. I have been rejected all my life, family, people, I no longer feel I can go on. I am tired, weary, and the pain, being totally overwhelmed and the darkness is winning. I just want to opt out of life now ......