Your comfort zone is not keeping you safe. It is holding you back.
So many of us grab on tight to the "safety" of what we know. That could be a training program, a therapeutic modality, even a sport. Just when things seem their darkest you can be sure a breakthrough is near. New strengths gains, new skills mastered and confidence acquired. All of these come just after most will want to give up.
If you aren't constantly challenging yourself you are moving backward. Whether it be learning a new skill, revisiting a fundamental lift or improving your mental game, if you aren't pushing your limits is one area you are really moving backward.
Once you realize that all your goals are sitting on the other side of your comfort zone the sooner you can take action toward achieving them!
Get uncomfortable and get after your goals!