For a professional writer it takes only a few minutes to get into that mood when his fingers start itching to put a pen to paper or to get that keyboard moving to create a world of his own with an assortment of characters. The characters could be someone the writer had occasion to interact with or could be fictional. But to shape them into characters one can associate with requires the fertile imagination of a writer who may have had personal experience of the behavior of these characters or situations. Added with the mastery of words he can command he could churn out a short story or a novel that could become a masterpiece. Many believe that there should be a basic plot around which one can weave a story with the embellishments from the writers' own imagination. But there are a few writers who can develop a story as they go along and create a classic.
There is a belief that to be a writer you must have certain inborn qualifications besides a desire to write. A college degree or a mastery of the medium of the language you are using to express yourself is what you may think is the basic requirement. But while it helps get one's thought process started it is the play of emotions in one's mind that conjures up situations that eventually build the core and substance of the story. A writer therefore must have the innate ability to visualise the whole picture that will evolve at the end. Some writers take a long build up to bring out what they conjure up but others do it with little deliberation.
To write a political essay requires the ability to analyse the material available to deliberate upon the subject at length but also the in depth knowledge of what is the ultimate picture that will emerge. The subject dealt with can be controversial and will be debated upon and unless you are sure of the basic premise upon which you have built up the article you stand the risk of losing your credibility.
Finally the feelings of elation and satisfaction when your see your efforts in print can only be felt and cannot be described. That is ultimately the writers' reward.