Or so we think. Katherine Heigl's contract status has been up in the air for some time, and her movie career is taking off, so it's been rumored that she wants out of Grey's Anatomy. We'll see if that proves true.
Vulnerability isn't the opposite of strength. It's a necessary part. You have to force yourselves to open up, to expose ourselves, to offer everything we have and just pray that it's good enough. Otherwise, we'll never succeed.