From her professional experience, she pours her inspirational insight and her own personal understanding of relationships and mental health into her work.

As an author, Lisa's writes into a broad spectrum of topics. Her first book, The Road Less Traveled, was written on a road trip with her truck-driving husband Steve and is full of practical tips for a happy marriage. The Light in Your Eyes, a book of poetry, was written across the last 30 years. It documents Cassman’s journey into what love means, as her husband showed to her, starting when they were hopeful teens. Her book, Finding the Beautiful You, was written to help women and teens find their self-esteem and value according to what scripture says. Talk Before Text, a prayer journal guide was written so the reader can pen their own thoughts and focus their prayers. Her children's book, Buddy and His Big Truck, is based on the life of a truck driver, what they do and where they go while on the road. Her latest release, Stepping Into Growth, is a workbook inspired by her work as a life coach which gently leads readers through 7 strategies to build a Godly self-esteem that will change their lives.

In addition to her books, Cassman is a speaker at conferences, churches, workshops and seminars. Her self-worth seminars teach people to see themselves with the value God places on them and receive emotional healing to affect every part of their lives. She also does pre-marital education for couples. As a licensed, traveling minister, Cassman officiates over 30 marriages a year. She has a PhD degree in Clinical Pastoral Counseling from the Colorado Theological Seminary, which is accredited through the National Christian Counseling Association (NCCA), and is also certified to administer the Arno Profile System (A.P.S.) report, which is a personal identification/inventory.

She and her husband have four children together and eight grandchildren.