Getting out of your comfort zone means doing whatever makes you uncomfortable. This means doing things that you oppose, hate, or even fear, and because you do that, you naturally expand your discomfort zone.
I recently received a thank-you email from a student named Hope from a course I'm running. She said that our efforts helped her recover after a serious car accident last year.
“I-I-I-I want to go.” Have you ever heard a child or an adult speak this way? Have you experienced this stuttering state in your childhood? Did you ever imitate a friend of yours who talks like that?