I'm sorry about your friend! Really, it's friends, I think... It's not fair to them, but its exceptionally unfair to you too.

It'd admirable that you're trying to help, that's the kinda person that I want to be when I, eventually, grow up.

I do wanna suggest that in the middle of taking care of your friends, you don't forget to take care af yourself. I give this advice knowing I'd never follow it, so maybe I should say try to ignore yourself as little as possible.

The OP you replied to is right, and if you read it again, you'll notice his actual recommendation wasn't any kind of moonshot. If you still don't see it, remember that in addition to the person diagnosed with cancer, the stages of grief hit their friends and family too.

I'm sorry for how messed up the whole thing is dude, and hope you'll be ok.