Go into the realtors office and call him out in front of all his collegues...no one wants to work in an office with some one like that. Word of mouth is powerfulll you could easily destroy the guys future quite honestly. It sounds harsh but Im sure your not the first person this has happened too. People like that need to be put out of business...
5 really great mind set books
1. Wild At Heart - John Eldredge
2. Life is Tremendous - Charlie "Tremendous" Jones
3. Master Key to Riches - Napoleon Hill
4. Success! The Glen Bland Method - Glen Bland
5. How I Raised Myself from Failure to Success Though Selling - Frank Bettger