Can't remember a book title referenced by Mike and Mark...

Hi All,

Does anyone remember a cast when Mark and Mike refer to a book which talked about realising that you can't get everything done that you want to get done, and that it's valuable in accepting this? As I recall I think it was a memoir-type book, maybe by an entrepreneur. It wasn't a big feature in the cast, I think Mark mentioned it in passing as they were introducing the topic.

I don't think I dreamt it (!) but can't find it...

Thanks if anyone can help

Oliver