Andrea Monsarrat Waldo holds a Master's Degree in Counseling and is a riding instructor certified in 2008 by the United States Eventing Association. She is co-owner of Triple Combination Farm in Ferrisburgh, Vermont, where she and her two business partners train horses and riders of all ages and abilities in the sports of eventing and dressage. 

Waldo competes through the Advanced level in eventing, has shown through third level in dressage, and has brought along several horses from the very beginning of their training. She was also a practicing psychotherapist from 1994 until 2012 and now does StressLess Riding Performance Coaching in workshops and individual sessions with equestrians at all levels of horse sports. She is the author of the bestselling book Brain Training for Riders and The Imperfect Ride (triplecombinationfarm.com).