Question 1

What is the single highest-leverage productivity habit?

Accepted Answer

Time-blocking your two most important tasks before email or messaging, ideally in a 90-minute deep-work window aligned with your peak energy.

Question 2

Is multitasking ever effective?

Accepted Answer

Only for low-cognitive pairings (walking + audio). For knowledge work it costs roughly 40% of effective output, per Stanford and APA studies.