Every writer must write and write daily. To write is the writer's main job. Though this goal can sometimes be a hard to achieve since most writers normally hold a day job unrelated to their creative writing life and aspirations. And the hassle and bustle of the everyday workday can sometime be so overwhelming that being creative at the end of it is just too much to hope for. And this is where creative writing prompts come in. They help stir the creativeness and allow the writer to just concentrate on the writing.
One of the most common forms of prompts for writers is being given a set of random words that should be used in a story from which a story must spring. The second common form of writing prompts is being given a random sentence, which can either become a part of the story somehow or it can be the so-called story starter sentence. In other words, it can either be a first sentence or a sentence that must become a part of a story somehow. And the third most common form of writing prompts are picture prompts, where a story is inspired by a photo or picture of a person, a scene, an object, etc.
Every writer should spend a part of each day writing. Even if just for a little bit. Like writing for 15 minutes or writing something small like 500 words, but it should be done and creative writing prompts are, by far, the best way to achieve this goal. Because the old saying, "Practice makes perfect" holds true for writers as well.