Sometimes we love our comfort zone too much we're not willing to step out of it for even awhile.
But the truth is, sometimes by being too comfortable, we are disallowing our own growth and sooner or later, we'll find that our comfort zone is no longer as comfortable as we want it.
So, before that happens, we have to occasionally step out of our comfort zone. It'll just last for a few moments.
Then, after it ends, we'll realise that we've grown.