Jim Cathcart was a college drop-out with little ambition when a five-minute radio program by Earl Nightingale inspired him to change his life. Nearly 50 years later, Cathcart is a world-renowned sales expert, motivational speaker and author whose bestselling books include “The Acorn Principle,” “Relationship Selling” and “The Self-Motivation Handbook.” He was recently appointed California Lutheran University’s first entrepreneur-in-residence, where he will mentor aspiring business professionals through the School of Management. He shares his top sales tips in this interview with the Business Journal. Read the full story in the Jan. 23 issue of the San Fernando Valley Business Journal.