Hi
I had much the same as you (but no radiology) and yes it sounds terrible when you write it all down ( and that's not counting any side effects, which even when small can be a real pain). But three and a half years on (heading for the big 4, then the really big 5 can't be too far away!), it's amazing how much you adapt.
Concentrating on the small things and the day to day things is very practical. But it may also help to imagine the day when it all seems rather far away. Day oncology a thing of the past (terrific as they were), one small tablet a day (I'm on Femara as I am post menopausal, no observed side effects), did my first big overseas trip after treatment last year.
Think of it as looking through a reverse telescope at the minute - everything looks so far away and goes on for so long. But the day will come when it won't.
I found being busy helped a lot (I didn't stop work) but this is really variable. Some people get huge benefit from taking a break. As far as possible, do what works best for you at the time, there never was a better time to be 'selfish'!
Good luck