My first encounter with the approval to be selfish and that selfishness is ok, was when I overheard a man advising his teenage son that he needs to be selfish in other for him to help people.
In his words, people think selfishness is bad but you need to be able to care for yourself first, and have more than enough because only then can you comfortably care or give to other people without it seeming like too much of a burden that might invoke anger.
I did learn a lot from that because truly one cannot give from a place of lack but abundance. We also cannot give what we do not have.
So Dreemy, you are very much in line with your time off. Even machines are subjected to rest after the days work.