Well it's not a thing with a particularly obvious term to search for -- "small thing worked on over long periods that brings great change" doesn't really provid

Well it's not a thing with a particularly obvious term to search for -- "small thing worked on over long periods that brings great change" doesn't really provide good results on Google despite it being a rather specific idea. So I'm grateful for any pointers to resources I can look into further for this kind of thing. The other person's reply with an explicit book name doesn't seem to have taken up all that many words, and presumably they know what they're talking about and them dropping a book name like that would save me a lot of time compared to me searching around the internet based on a very vague phrase. Now granted, my Google-fu could stand to be a lot better.