Can you name some intense jobs that involve at least a few of the following characteristics:

Largely independent
High pressure
Involves debate/negotiation/trickery
Quick thinking and acting
Some element of danger
Slick/secretive

Teaching involves a lot of independence, definitely high pressure, lots of negotiation. You have to think quickly and be able to switch gears in an instant, and unfortunately, we do have dangerous situations.

Used car salesmen.

Police officer

Special OPs, Mission Impossible/Burn Notice style.

Knowledge of weapons and explosives might be required, several languages, and able to run very fast.

ER nurse
L&D nurse
Paramedic