on the edge

prepositional phrase3

1. •
   In a precarious position, with one's resources nearly exhausted.

   • Our job as social workers is to help families on the edge.
2. •
   With figurative or temporal proximity to (an event, state of mind, etc.).

   • The stock market was on the edge of collapse.
3. •
   In a state of excitement due to taking risks.

   • You know, flying a chopper, a helicopter, it's just natural for me. Maybe... just a little exciting? Yes, man. It's great. There's nothing like it. It's on the edge. — 1990