Subtract
The first lever of the course's method: making space by removing what isn't earning it — wasted circulation, redundant walls, single-job furniture. The fastest, cheapest gains in a small home are almost always things taken away, not added.
Lever 01 of the method
Before buying anything, audit your home and remove a redundant partition or a corridor's worth of dead circulation. Reclaimed space costs nothing; bought space costs lakhs.