Mmk well first 3 things:
1. I'm glad you lived through cancer :)
2. Your brothers are f**kwards
3. Don't commit sucide please. . .
My advice:
So I think a lot of people have been in situations like yours. Meaning a lot of people are sucidal. But heres the thing...you have made it this far, try to go a little farther? Try to find a pillar to ground you. My pillar is music, my best friends/friends, MSMG, you, and the fact that if I die other people I care about will to. They are how I am breathing, I would be dead by now if I hadn't found MSMG...your pillars could be NF, MSMG, friends, pets. Another thing is sucidal people often think they have no purpose. No one really HAS a purpose, you need to simply find a purpose. Right now your purpose could be staying alive. I understand it's not always easy to look on the "bright side" but try to think about the good things that might come out in the future.
Also if you die I will be very sad OnO Your a good peron ;0