Once you get past the denial and anger, how would you live your last days?
Why are you not living those today?
Don't tell me you'd quit your job or you'd run off into the mountains. Tell me about the things you've always wanted to do, the places you'd go, the people you would reach out to. Tell me what fear is telling you.
For most people, the last 6 months wouldn't be able exotic trips or crazy adventures - it would be about spending time with the people they love, and living in the moment.
Tomorrow may, or may not, come -- so live today fully.