Is Justification in Christ Necessary for Your Christian Counseling?
From the secular point of view, God in Christian rehab (or any idol) is important as a buffer between trigger and drug and to give a sense of strength to overcome the addiction. This strips Christ's good things and mechanically uses them - often outside even the full complement of His good things, as revealed in Scripture - as one component of a human philosophy designed to change behavior. In it, the Church colludes with the World to subvert Christ, Himself, to attain some benefit from His good things.
I am a concerned Christian who would like to know if you tell your patients that even fully successful treatment is meaningless without justification by confessing and believing, according to the Scriptural account of salvation doctrine (1 Corinthians 15:1-8 and Romans 10:9, 10, 13).
Also, does your Christian therapy require Christ, or does it only use the good things taught by Christ? The World (God's enemy) uses the good things taught by Christ for their good effects in a mechanical way.
Stopping to fix the broken arm before addressing the head wound is malpractice.
Preach Christ, and help Christians get better. If you help the World get better, they might mistakenly think they are fine, and they might also falsely feel enlightened just because the name of Christ was used to treat their souls and bodies, even though the World is spiritually dead, by definition. Tell them how to be saved.