Daniel Campbell earned his Bachelor of Arts in Psychology and Preprofessional Studies in 2004 from the University of Notre Dame. After graduation, he worked in medical research for five years in anticipation of entering medical school. However, God called him to a different life when he entered the Catholic Church and received the sacraments of Confirmation and First Eucharist in 2008. He then earned his Master's Degree in Systematic Theology at the Augustine Institute (Denver) in 2012, focusing his studies on the works of St. Thomas Aquinas.

Daniel joined the faculty of the Lay Division at Saint John Vianney Theological Seminary in 2012. He taught the Denver Catholic Biblical School program for 8 years and was also the creator and instructor of the "Art of Living: Mastering the Virtuous Life" Enrichment Course in that time. He was given additional duties as the Coordinator of Curriculum Development for the Lay Division in 2017. He currently serves as Director of the Lay Division, as well as creator and instructor of the "Life in Christ: Prayer and Conversion" Enrichment Course.

Daniel and his wife and five children live in the Denver area.