Real writers aren't like other people. Sometimes, this myth is a sanitized way of saying that real writers are a little crazy, or gain their best inspirations from controlled substances. A good way to dispel the second part of this myth is simply to write something while drunk and read it when sober. Writers aren't like everyone else. But you are like many great writers who made the same choices.
Real writers are confident.
Even if your book is accepted, it's going to be a couple of years before Oprah gets a copy of the galleys, or your phone number. Meanwhile, you may find that you do have what it takes to give a brief talk to your local writer's club, or go online for an author chat, or accept an invitation to speak at a conference. Real writers are driven. The fact that you haven't is surely a sign that you don't care enough about writing to make it your top priority. The simple truth is that most people have multiple priorities, and writing is very often not the first.