The accountability fallacy is that other people can keep us walking with the Lord. There is certainly some degree of help there, but in the end, the option of lying will always thwart the effectiveness. The only one who can keep us on the right track is us, and the only way that will happen is if we have a greater fear of God than we have infatuation with sin. The only way that will happen is if we are filled with the Holy Spirit. If you want to really help other believers, keep them in the spiritual disciplines, and the Holy Spirit will keep them accountable.