I am sorry for the situation you are in. The best advice I can give you is to speak with a Divorce Busting Coach today. Divorce Busting coaches will give you the best guidance on how to save your marriage and get things moving in a more positive direction.
You mentioned that the two of you will be attending counseling together. Your observation is a good one regarding what the agenda might be for the counseling session. Check out this video about couples counseling from Michele so you know what to watch for!