Part X will haunt you to the end of the world and it will destroy you as it has destroyed countless others. You think you're special? That this can't happen to you? That's exactly how you'll get undone. The road to hell is paved by the hubris of amateurs. The pro understands that she doesn't know a thing, until the end. In fact, the less she knows the better. She lives for just another day to do her job.
Like AA members, you've won the battle for today—at most. For the next few minutes, most likely.