deep work

https://www.amazon.com/gp/aw/d/B00X47ZVXM/

tame the flow

https://leanpub.com/tame-the-flow

living in flow

https://www.researchgate.net/publication/342054567_Book_Review_Living_in_Flow_The_Science_of_Synchronicity_and_How_Your_Choices_Shape_Your_World_by_Sky_Nelson-Isaacs