Coherence allows the reader to move easily throughout the essay from one idea to the. next, from one sentence to the next, and from one paragraph to the next. Following are several. methods that can be used to achieve coherence in writing: Use Repetition to Link Ideas, Sentences, and Paragraphs. Repeating key words or phrases helps connect and focus idea(s) throughout the essay. Repetition also helps the reader remain focused and headed in the right direction.