Everyone--Jewish, atheist, Muslim, Hindu--gets the same testimony from me--how Jesus Christ saved me from death by alcohol and various darknesses that I learned in India and Central America and on and on.
My testimony doesn't really even concentrate on salvation, because I'm still here, not dead yet. It's about being healed by the Blood of the Lamb (1 Pet 2:24) and how every single day that I live sober is completely the work of the Holy Spirit (not my work) (John 15:5) and it's completely because of God's mercy on me (Exod 34:6-7).
Jesus Christ and Bible study is my sobriety program.