Tunnels, Lights, and Idioms

There is an idiom that has permeated a great deal of my brain-space lately.  Customarily, the phrase is spoken whenever a person or group has faced a grueling circumstance and is nearing the much awaited point of deliverance.  It is a popular saying--a mainstay for bi-standers (a.k.a. 'outside observers').  The idiomatic phrase is commonly associated [...]