User stories are a lightweight but powerful way to track your work and drive collaboration. They aren’t a requirement document, they’re a promise to have a conversation.
Small, uniformly-sized user stories move through the system more efficiently but you don’t need story points to achieve that, t-shirt sizing will do the trick.
Splitting stories efficiently early is key but use elapsed time to keep an eye on whether something is running off the rails and act.
Task lists allow you to plan and coordinate the smaller pieces of a user story.