Writing is a creative process and even the best of writers can only write well when they are very comfortable mentally , emotionally and physically . A problem of any kind or stress can affect the creativity of the writer and make it difficult for him or her to even write a few sentences. This can be really frustrating, but the writer can only wait it out as this is usually just a passing phase.
Some times if a person is low on reading exposure, it can affect his or her writing skills. Reading a few newspapers or magazines or reading a short stories, can give the writer a few ideas on what to write and how to start the essay.
If the essay is on a particular topic, you first have to spend some time researching the topic. The information can be compiled from online sources , especially for technology essays, but for specialized niches, offline research may be needed. Once you gather all the relevant information, you should assemble it in a number of sentences. After the sentences have been formed, edit them so that they make sense. Combine the sentences to form a paragraph. Reread and edit the essay a few times to make it more readable.