A specific discipline is chosen to reach a goal. (“Begin withe the end in mind.”) This ‘restriction’ rules other actions and ways of thinking.
We then break down that choice further, into the pieces we need to maintain and improve this, and focus deeper on each of these.
The Temple was a restriction that enabled the presence of G-d to have a ‘place’ that would not overwhelm creation.
Within the Temple design and services were many parts and roles that enabled this connection.