Because every working day offers more tasks than hours, prioritisation is the first skill of good time management. The Eisenhower Matrix, popularised by President Dwight D. Eisenhower and later by Stephen Covey, sorts tasks along two dimensions, urgency and importance, producing four quadrants: do urgent and important crises now; schedule important but not urgent activities; delegate urgent but not important interruptions; and eliminate what is neither urgent nor important. Quadrant 2, the important-but-not-urgent category of strategic planning, relationship building, and personal development, deserves the most proactive attention, because investments there prevent tomorrow's emergencies.
The Pareto Principle, also called the 80/20 Rule, observes that roughly 80 percent of results come from 20 percent of efforts. Italian economist Vilfredo Pareto first noticed this distribution when observing land ownership in Italy. In a time-management context, the principle encourages you to identify the small fraction of activities that produce most of your results and prioritise those, while reducing or eliminating the rest. Brian Tracy's Eat the Frog method recommends tackling your most challenging or dreaded task first thing in the morning, when willpower is highest; the saying is often traced to Mark Twain's advice that eating a live frog first means knowing the worst of the day is behind you. The ABCDE method ranks tasks by the severity of consequences for not completing them, from A (must do) through B (should do), C (nice to do), D (delegate), to E (eliminate). The Ivy Lee Method, devised in 1918 when productivity consultant Ivy Lee advised Bethlehem Steel executive Charles Schwab, asks you to write down your six most important tasks each evening and work through them in priority order the next day. The 1-3-5 Rule narrows this further, committing to one big thing, three medium things, and five small things per day.
Several more specialised frameworks extend the same logic to particular contexts. Warren Buffett's two-list strategy asks you to write your top 25 goals, circle the top five, and treat the remaining 20 as dangerous distractions to be avoided. The MoSCoW method labels requirements as Must have, Should have, Could have, and Won't have, clarifying what truly matters for a release or sprint. The RICE scoring model multiplies Reach by Impact and Confidence and divides by Effort to produce a comparable priority score, while the Weighted Shortest Job First approach divides Cost of Delay by Job Duration, ranking work so that quick wins with high delay cost come first. Complementing all of these is the Most Important Task system, which asks you to identify one to three critical tasks each day that would make the day a success even if nothing else got done, and complete those first.