Do you remember the "good ol' days"? (Or if you're too young to remember them, maybe you've read about them?) Those days when, if you were a hard worker, you could be assured of keeping your job for as long as you wanted? Well, if you haven't noticed, those days are long gone!
Job security is a thing of the past, and even pro speaking doesn't guarantee you a job. But in many industries, whether or not you keep your job is based on many factors that are out of your control. Not pro speaking! If you work hard and work smart, you've got the closest thing to "job security" as you'll find anywhere.
When you're a pro speaker, other people don't control your destiny. You do!