Writing an effective argumentative essay requires a combination of skills including thorough research to support a stance, a clear thesis statement, and well-organized paragraphs that build an argument and address counterarguments. It also demands careful planning, such as crafting an engaging introduction and conclusion, maintaining a logical flow of ideas, and anticipating opposing viewpoints. Moreover, the revision process to ensure clarity, coherence, consistency, and proper grammar is time-consuming but indispensable.