David Allen's GTD principle that you must have a capture tool available in every context where thoughts arise — commute, shower, meeting, bed — with all channels feeding into a single review inbox.
Prerequisites
Multiple capture channels prevent loss
Map and Fill Your Capture Dead Zones
Capture must be frictionless
Time Your Capture Workflow and Eliminate Friction
Ubiquitous capture tools
Map Your Thinking Contexts and Fill Capture Gaps
Voice capture for high-friction moments
Capture Thoughts by Voice in High-Friction Moments
Photograph as capture
Capture Three Spatial Artifacts as Annotated Photos
Digital and analog are both valid
Compare Your Digital and Analog Capture for One Day
Capture during conversation
Practice Selective Anchoring During One Live Conversation
Slow observation reveals more than fast observation
Capture Five Minutes of Silent Observation in Drafts
Habitual judgments become invisible
Track Automatic Judgments in Google Keep
Practice with small stakes first
Capture Daily Observations in Drafts for Low-Stakes Situations
Triggers precede patterns
Log Pattern Triggers in Google Keep for Three Days
Most information is noise
Log and Classify One Day's Information Inputs in Notion
Urgency is usually noise
Track Urgency Noise in Google Keep
Curate your information diet
Track Your Information Diet in Google Keep
Social media is an adversarial noise environment
Track Your Social Media Signal Ratio in Google Keep
Externalize your commitments
Track Every Commitment for 24 Hours in Drafts
Externalize feedback you receive
Build a 7-Day Feedback Log in Notion