How do I practice capture system?

The most direct way to practice capture system is through a focused exercise: Audit your current system. Open whatever tool you use for notes, tasks, or ideas. Can you identify a clear boundary between unprocessed captures and permanent storage? If everything lives in one undifferentiated space, create a separation right now: make an 'Inbox' note, folder, or tag. For the next 48 hours, force every new capture into that inbox — no exceptions. Then schedule a single 20-minute processing session where you move, rewrite, or delete each item. Notice the difference between capturing and organizing as two distinct cognitive modes.

Common pitfall: Mixing hot and cold in one container. Your permanent notes become polluted with half-formed fragments. Your inbox accumulates hundreds of items that were supposed to be temporary but became permanent by neglect. You stop trusting your system because you cannot tell what has been processed and what has not. The fix: enforce the boundary. Unprocessed items live in exactly one place. Processed items live everywhere else. Nothing crosses the line without a deliberate decision.

This practice connects to Phase 3 (Capture Systems) — building it as a repeatable habit compounds over time.