Applying reason to arguments is a process of evaluating the truth of the statements offered in support of a conclusion, and then evaluating whether the statements together really do support the conclusion. Guides such as Weston's Rulebook provide clear, simple rules for using reason to develop your own arguments as well as for evaluating the arguments of others. I recommend finding a guide you are comfortable with using. Invest the time to read it and then refer to it periodically to keep from falling back into bad habits.
Accountability Citizenship, p. 40, Stephen P. Tryon, Xlibris, 2013