I'm sorry you need to be here. Your Friend is absolutely right, One day at a time is how I got through this. Just deal with one day at a time.
My other mantra is " don't borrow sorrow from tomorrow". That is wasted emotion and worry. It may never happen.
I wish you well with your treatments and will keep you and your Family in my thoughts.
Tammy

Caregiver/advocate to Husband Kris age 59@ diagnosis
DX Dec '10 SCC BOT T4aN2bM0 HPV+ve.Cisplatin x3 35 IMRT.
PET 6/11 clear.
R) level 2-4 neck dissection 8/1/11 to remove residual node - necrotic with NED
Feb '12 Ca back.. 3/8/12 total glossectomy/laryngectomy/bilat neck dissection/partial pharyngectomy etc. clear margins. All nodes negative for disease. PEG in.
March 2017 - 5 years disease free. Woohoo!