The Jar Glass Method
A prioritization method that categorizes tasks by importance using the metaphor of filling a jar with rocks, pebbles, sand, and water. The core principle is to tackle the 'rocks' (big, important strategic items) first—if you fill the jar with sand and water first, there will be no room for the rocks.
Last updated: 2026-04-04 22:53
Overview
The Jar Glass Method is a task categorization technique that uses the metaphor of filling a jar with different-sized elements to represent task importance. It teaches that you must prioritize big, important items before filling your time with smaller tasks.
Task Categories
- Rocks - The big, important, strategic items that must be tackled first
- Pebbles - Medium-importance tasks that matter but aren't critical
- Sand - Smaller, routine tasks that fill in gaps
- Water - Trivial activities and distractions
Core Principle
If you keep tackling small things (sand and water) and not the important strategic items (rocks), your jar will quickly fill up with no room left for the important work. Always handle the rocks first, then pebbles, then sand, and finally water.
Related Items
1-3-5 Technique
A daily time management method that structures your to-do list into 1 big task, 3 medium tasks, and 5 small tasks. It provides a simple, focused framework for prioritizing daily work and managing workload capacity.
10 Minute Task
A time management technique where every task on your to-do list should be broken down so that it takes no longer than 10 minutes to complete. If a task would take longer, it must be subdivided into smaller, more manageable pieces. This approach prevents procrastination by making every task feel achievable.
10 Minutes Technique
A task-start strategy where you commit to just 10 minutes of effort on a selected task, after which you can stop if you want. The psychological trick is that once you begin, you usually won't want to quit, overcoming initial resistance and procrastination.
112/26 Rule
An extended productivity technique similar to the 52/17 rule, where you work for 112 minutes followed by a 26-minute break. This longer interval is suggested for tasks requiring sustained deep focus and complex problem-solving.