A Season for the Spirit by Martin Smith
The Lenten devotional Sophfronia mentions in the Week One video.
From the Church Publishing Description:
Spiritually hungry readers who want to breakthrough to a deeper experience of prayer and want practical help for Lent need look no further than to Martin Smith’s A Season for the Spirit.
Originally commissioned by the Archbishop of Canterbury in 1991, A Season for the Spirit provides forty daily meditations for Lent, leading us on a journey of discovery in which we find that Christ, through the Spirit, embraces every aspect of our humanity. Each meditation concludes with a prayer and passage of scripture or quotation for further reflection and study. While it aims to assist a daily practice of personal prayer, it is also widely used by groups who pledge to meet regularly so that members can share their thoughts, reactions, and spiritual experiences.