It is the process of expressing ideas and opinions as well as justifying a stand based on prior and existing knowledge and experiences needed to arrive at a decision.
Dare to read everyday. Citing relevant ideas of experts and authorities in reading materials definitely help strengthen one’s stance of an issue.
Learn to focus on main ideas (explicit and implied) and supporting details mentioned in the argument.
Examine the pros and cons of your argument / resolution. This will help you weave the flow of your thoughts presented.
Organize your thoughts. Arrange ideas either in chronological order or by emphasis.
Note points for improvement. After having justified an issue, recheck your stand based on your power to convince the reader/audience/ Moreover, practice, practice so that you become conscious of becoming better every time you reason out.