Is there a nursing process that you have seen in hospital that really makes things function like a well-oiled machine? If you have a computer and an urge to write then you can definitely make some extra money merging these two. It is extremely easy. You can write about anything you know. You can even write about a hobby or about some new technique you have for keeping your home organized. There is even a market for short stories and poems.
After writing your article and having it proofread by someone, send copies of your writing to several magazines. For a quick poem or short article you can get from $5 to $500. For a full-length article, perhaps with photographs, you make anywhere from $20 to $3000. You have to pick the proper magazines. Obviously, Ladies' Home Journal isn't going to buy an article about malfunctioning forklifts, and Mechanic's Monthly doesn't want a cartoon about jewelry. The only requirements are to make sure your facts are accurate, and make sure your material is in your own words and ideas.
This can be done in two ways. Look at different magazine websites such as Nursing2004, Ladies Home Journal, True Stories, Good Housekeeping, etc… and find out what their needs are and find out what types of articles they accept. You can find this information usually in "writing guidelines" section on their website.
Don't send out just one article and wait for a fat check. It doesn't happen that way. Instead, write, write, and write. Send twenty articles per week to twenty different publications. Keep sending them every week. Some of them will be purchased. After a while, you will become practiced at writing what publishers want to buy and you will build a credential. The author who can claim 300 published articles can command a higher price.
This writer has no problem writing after I get an idea, but sometimes the ideas are rare. I recommend carrying around a small notebook at all times and write your ideas as they come to you.