Look for likeable features (Influencing & Negotiation)
So now I have to brown-nose a zombie?
 
Consciously look for something you like about a person. 
Looking for genuinely likeable features and complimenting them can increase cooperation and break barriers.
With more difficult people this can repair relationships and get stubborn colleagues onside.
 
 Trainer Tools
Being a 'People Person' Workshop Guide
 Documents
Being a People Person Infographic