Im a workaholic - if I dont, who will?

The first time I boarded the BC train my son was 13. I'd been a single parent for a while and any spare funds went into making sure the house (literally) didnt fall down . Money has always been tight,  treats were rare and it was a momentous occasion when I rebuilt the back of the house enough to not have to use a shovel to jack up the back door in order to close it. 
A 'mend and make do' mentality  doesn't suit everyone, but money isn't everything. It's just most things.
I hated giving up hard won ground at work when I've been in treatment. It feels like a sacrifice you can never recoup. And it can be. But, for me, I had little choice and given that the next scan could be the one that tells you you're irredeemably fucked, there comes a time when everyone has to make concessions. Including the kids.
You didn't choose to be going through this and can't do it on your own without something having to give. It might be  taking a back seat for a couple of days per cycle. It might mean not being not being able to work at all. Whatever those concessions are, the people around you will have to understand you are not superwoman and that things have changed, either in the short or long term.
Many of us find the loss of control of our lives the bitterest pill we have to swallow. Good luck, keep plodding forward. Mx