The problem with "productivity gurus" is that not one of them actually has any accomplishments in an actual specialized domain (other than marketing their stuff).
Conversely, as I look at all the accomplished people around me, they've quietly built a mountain of expertise and achievement with cobbled systems held together by spit and glue that a productivity hustler would scoff at.
Conversely, as I look at all the accomplished people around me, they've quietly built a mountain of expertise and achievement with cobbled systems held together by spit and glue that a productivity hustler would scoff at.