Security guard — one of the best jobs in the world!

Low pressure, and it’s almost impossible to die suddenly from overexertion. Safe, with an extremely low probability of sudden danger.
Wide network, plenty of time—you can think things through, write, and run side businesses.
Not much money, but steady; with a deep network, you often end up with occasional windfalls.
Security guard—really comparable to a librarian; many people never figure it out in their entire lives.