How Do You Get Yourself in the Comfort Zone?

How many of us are holding ourselves back from having images of ourselves having doing or being things until people can show us how? The phrase? But that's bat backwards. You know, you won't see how until you see it done. We're constantly being stretched. How do i hold an image of success before i have the data about how to get there? And this is where the concept of the comfort zone comes in.