The ticket is passage authorized — the small paper that permits the journey or entry. The lost dream-ticket is authorization misplaced at the moment of need: the feeling of being unentitled to the passage everyone else boards.
Positive Resonance
Passage secured, entitlement in hand, the door that opens to your paper
Shadow Aspect
The lost ticket at the gate, traveling unentitled, inspection dreaded
Nuances
Ticket in hand: authorized for the passage
Lost at the gate: entitlement missing when checked
The inspector coming: legitimacy about to be tested