I know how hard it can be, last week you were blithely getting on with your life, looking forward to your dad being there for you, and now he has cancer.
But as you learn more, you will realise it need not be quite as terrible as you might imagine.
Most men of 64 have some sort of cancer growing in their prostates, some notice it, others don't.
Ten years ago at the tender age of 54, like your dad I was diagnosed with prostate cancer, mine was Gleason 9 and locally advanced.
I won't pretend that the last 10 years have been a barrel of laughs, I have been in and out of hospital for various treatments, but taken in the round they have been ten wonderful years.
In that time I have had wonderful holidays in Corfu, Madeira, Tenerife, Canada even Penzance. I have been a proud dad at my step daughter's wedding, my step son is about to graduate, my daughter has provided me with two wonderful grandchildren, I get to take my grandson on train rides, because like his granddad he is a great fan of Thomas the tank engine. I had lots of fun last summer building sandcastles on the beach. Perhaps my most emotional moment was watching my granddaughter perform as Mary in the school nativity play.
Tomorrow I am going out to lunch with two young mums I met at the mother and toddler group.
So as you can see men with Gleason 9 can lead long and fulfilling lives, the maxim to adopt is I may have cancer, but cancer hasn't got me.