When you find an off market property, it's like finding a pot of gold at the end of the rainbow.

You are sitting on a gold mine.  

If you're going to go by historical trends physical Gold and Silver will be a great place to put your money in.

What isn't believable about inheriting money from a stripper tenant, or finding a million bucks stacked in a wall, or having a leprechaun give you a pot of gold as a thank-you gift?

Rodney, an agent who won't give you BS comps as a matter of course is worth her/his weight in gold.

A good TC for a high producing agent is worth their weight in gold.. 

Put down your 3.5% and house hack and appreciate your way to a gold mine in sunny Southern CA.

A good leasing agent is worth their weight in gold to reduce vacancy and avoid problem tenants. 

I'm going to quote names instead of books so that you can also search them on youtube for interviews and podcasts:  Gary KellerRobert KiyosakiPeter ThielNaval Ravikanth (mostly general wealth-building advice but he drops gold every time he opens his mouth)

His contacts alone are worth a truck full of gold.