Expression number
4 The Builder
Built to construct. Your equipment is patience and method: you can hold a long plan without losing the thread.
Also called the Destiny number. Calculated from every letter of your full birth name, it describes capacity — the tools in the box rather than the road you walk with them.
What 4 does well
Finishes things. Builds systems other people can depend on without supervision.
What it costs
Mistakes rigidity for reliability, and resents change even when the change is right.
4 elsewhere in the chart
This is Expression 4 specifically. The same number in another position describes something else entirely.