Sometimes you can forget why your missionary is overseas, and why you are praying for them. Remember to pray for what your missionary is actually “doing” witnessing, visiting, teaching, preaching, counseling, nursing – and pray for the people they are ministering to.
Prayer letters will teach you how to specifically pray for those things. But include requests for boldness, open doors, open hearts and excellence in the effort. Most of all, as the Holy Spirit to empower your missionary for productivity. (John 15:16).