Get busy living or get busy dying

I've weighed the pros and cons and although I know what's right, I sometimes wonder if I have the strength to do it. I can only count on others for so long and then I see no purpose in existing. People stay around you as long as they can gain something. Unfortunately, I have nothing but myself and my love for my descendants. I have come to the conclusion (with much help) that I am a detriment to the people who I love the most. What is the obvious thing to do?