Opened and Closed doors

On my holy pilgrimage, I was conversing with a fellow pilgrim.
Our holy tête-à-tête brought us to this topic on opened and closed doors.
And it fascinates me how Providence actually orchestrates our decisions by opening and closing doors.
With opened doors, we know that it is more or less a a green light.
And with closed doors, we can somewhat conclude that it is a stop sign.
No doubt, there are other important markers to decision making.
Yet this fundamental and essential test of opened and closed doors stands.