I'm sorry to hear you're not fully prepared to face everything going on. I've been there, and empathize. I hope you're up to snuff quick.
"My mind is not as sharp as it once was, so as a consequence the quality of my writing will suffer to a degree."
I have to say I noticed in this comment particularly that is not evident. I literally said to myself while reading it 'Damn, this guy can write!'
Be well.