(There was a gleam of truth in the charge of Mrs. Hutchinson9 that the Puritans lived under a covenant of works10. This was because they had not yet fully grasped the whole truth of divine revelation. No further proof of the legalistic tendencies of Puritan worship is needed than a glance at their own laws. A man, for example, was fined, imprisoned, or whipped for non-attendance at church services.) this all what I know hopefully will help you
Answer:
Listen
One thing to keep in mind while participating in any formal or informal discussion is to listen carefully. One must understand the point of organizing a group discussion. We want to listen to people's perspectives, assess them on the basis of their skills etc. Listening is one such important skill.
When you try to listen to the other person's point carefully you'll be able to -
Refine your own points.
Counter their point if necessary.
Notice their mistakes and avoid them etc
Listening here does not mean you will not put forward your points. No. Be an active participant but keep your ears open.