He Walked Away From Millions To Start From Zero w/ Derek Halpern

2005 - Derek Harn Interview

How to Sell Anything to Anybody (Keynote Presentation)

Derek Halpern - Building Customer Loyalty (REWIND)

Negotiation Skills: 3 Simple Tips On How To Negotiate

The Origin of How Ridiculous with Derek Herron - The Stewardship Project: Stewarding Your Influence

Reinventing the Noose