Create a list of people who have transitioned from reality to scripted, etc. In other words, arm yourself with information, and avoid buying into their stories.
Be confident, persuasive, and ready to prove why you are qualified to work in the medium of your choice.
And of course, when in doubt, find mentors who have successfully made the transition you want to make and find out how they did it.
For more tips and articles by top entertainment industry coach, the Greenlight Coach, visit www.theGreenlightCoachblog.com