You’re not waiting for the end of a thing though. You might hope you are, but the truth is there’s always one little thing you still have to take care of. So until the last build is green and the PR is filed, you’re being held hostage by the train of thought that’s tied to this unit of work. Thinking too much about the next one just ends up adding time to this one.

You’re a grownup. You should know when to take a break and that’ll be getting away from the keyboard, not just frittering time waiting for a slow task to complete.