Praying While You Work: Devotions for the Use of Martha Rather than Mary by Dom Hubert van Zeller is a spiritual guidebook designed for busy people. It offers short devotions and prayers that can be practiced in the midst of daily activities, helping 'Martha' (busy in service) find God's presence without having to become 'Mary' (sitting in contemplation). The focus is on helping readers find a balance between active work and prayer. The book is especially suitable for individuals who have little free time for formal prayer (Martha-type). It emphasizes that busy work does not hinder spiritual life, but can be a means of self-sanctification if done with the right intention.