Most article directories accept only quality articles written by experts in their field. Actually, that's a little inaccurate. A more accurate of putting it is that most directories will accept any article that contains useful or valuable information, whether it's written by an expert or not. So you may be an expert in your field but you can always engage someone else to write for you and the articles will still be accepted. But if you want to save a little bit of time or money, you may want to write the articles yourself. Here's how you can write fast.
Plan your topics before sitting down at a writing session. Come up with a list of interesting titles to write about. If you want to write twenty articles, come up with more than twenty articles, and when it comes to writing, you can always ditch some titles that you don't want to write about. Just write down anything that comes to your head at this point and don't worry about not knowing enough about the topic and stuff like that. That will come later.
Once you have your list of titles ready, reword them so that they appear interesting to the reader. Over 90% of readers online scan titles become making a decision whether they want to read the articles or not. Be as specific as you can. Say something like "The Seven Steps to Creating Your Own Product", instead of "Product Creation Tips". The more related the title is to the reader's concern, the more likely they will read the entire article.
Block out a few hours each day in your personal planner for writing. These blocks of time are for writing, and for writing only. Don't use them for anything else. Find a conducive environment where you can write in peace, and don't let anything else distract you. This is the time where you need to let your creative juices flow.
When you sit down to write, refer to your title list and pick the one that you already have ideas about. Don't spend time getting stuck on a topic that you know little about and have very little to write about. Whatever comes to your head, write it down. The goal here is not to come up with the perfect article, but to come up with some content of decent length - say about four to five hundred words. That should take you no more than ten minutes to accomplish unless you type really slow.
Have a specific template to guide you as you write. For instance, your template can be something like having an introduction, stating your point, having a couple of examples, and finally ending with a conclusion. This makes your writing flows like water and you don't have to spend time thinking about what to write next.
Finally, when you're done, spending the next two to three minutes going through your article for any glaring mistakes that your word processor may have missed. Word processors may detect grammar or spelling errors but they'll not detect erroneous sentence structures.
All in all, it should take no more than fifteen minutes to complete an article if you follow the steps outlined above. Remember not to spend too much time on the last step, polishing your article. When it's done, it's done. Put it down, and quickly move on to the next article. That's how you get more done with less time.