Most good things arrive through somebody. Not the universe, a person, who mentioned your name in a room you weren't in, because they had met you somewhere once.
Which makes this less mystical and more geographic. What you are near determines what can find you. A choir rehearsal, a regular table at the same cafe, the group that meets on Wednesdays whether or not you feel like going. All of it is surface area.
Nothing finds a sealed room. The wonderful part still arrives unpredictably, but only into a life that has left itself a few ways in.