Discover Your Calling: The ABC of Vocational Discernment. All of us have a yearning to understand where we belong in this world. As Christians most of us understand from Scripture that God has a purpose for each of us and has gifted us differently. But discovering our unique giftedness and where God calls us to use those gifts eludes so many. In his new book, Discover Your Calling: The ABC of Vocational Discernment, Soo-Inn Tan provides biblical and down-to-earth support for those who seek to better understand how God is shaping their lives, preparing them for the continuing challenge and joy of a lifelong walk with Jesus Christ across all aspects of vocation.