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Productivity practice of blocking dedicated time for deep, uninterrupted work on important tasks. Defends calendar blocks from meetings and distractions to enable sustained concentration on cognitively demanding work.

Deep work time management methodology by Cal Newport involving dividing each day into time blocks with specific tasks assigned to each block. Creates structured schedules that generate massive productivity gains.

Cognitive cost incurred when switching between different tasks or projects, including attention residue, ramp-up time, and reduced performance. Research shows switching can cost 20-40% of productive time.

Prioritization framework created by Stephen Covey that divides tasks into four quadrants based on urgency and importance. Featured in 'The 7 Habits of Highly Effective People,' it helps identify top-priority tasks for optimized productivity.

Science-based productivity method using natural 90-minute biological cycles for focused work sessions. Based on ultradian rhythms, it optimizes cognitive performance through work-rest cycles aligned with body's natural patterns.

Framework for categorizing tasks based on urgency and importance, popularized by Stephen Covey. Also known as the Eisenhower Matrix or Urgent-Important Matrix, this tool helps prioritize work by distinguishing between what requires immediate attention and what drives long-term success.

Productivity framework by Cal Newport that distinguishes between cognitively demanding deep work and low-value shallow work, advocating for dedicated time blocks and minimization of the latter.

Concept by Vilfredo Pareto stating that 80% of outcomes result from 20% of causes. In time management, 20% of efforts produce 80% of results, guiding focus on high-impact activities.

A time estimation guideline suggesting you should double or triple your initial estimate for complex projects to account for unforeseen delays, interruptions, and complications, directly addressing the planning fallacy and Hofstadter's Law.

A productivity approach that focuses on tracking completed tasks and achievements rather than pending work, boosting motivation through visible progress, reducing stress, and providing concrete evidence of accomplishments for performance reviews and goal tracking.

A productivity technique named after Ernest Hemingway who famously stopped writing mid-sentence so he'd know exactly where to start the next day, leveraging the Ovsiankina Effect to eliminate starting resistance and maintain creative momentum across work sessions.

A project planning technique where teams imagine a project has failed and work backwards to identify what could go wrong, helping combat the planning fallacy by surfacing potential obstacles and risks before they occur.