H.A. Dorfman has worked in education and psychology as a teacher, counselor, coach, and consultant. In 1999, Dorfman became a full-time consultant in sport psychology for the Scott Boras Corporation, an agency that represents professional baseball players. With Karl Kuehl, he wrote The Mental Game of Baseball. He is the author of The Mental ABC's of Pitching, The Mental Keys to Hitting, and Coaching the Mental Game. His trilogy of anecdotal memoirs includes Persuasion of My Days and Copying it Down. Dorfman was a freelance journalist whose work appeared in The New York Times, Boston Globe, Miami Herald, and Los Angeles Times, among others.