Attorneys and accountants are undergoing a seismic shift from being technical specialists to business problem-solvers. Professional services marketers — like Esther Bowers, director of client service initiatives from Barnes & Thornburg LLP, and Brian Duffy, regional sales leader, Midwest market, at Grant Thornton — are helping their firms accomplish the former. Below, they share their perspective and advice to others facing this challenge.The need to be client-centricAttorneys and accountants are trained to …