When people use the term “comfort zone”, they are talking about getting out of it. They say you need to get out of your comfort zone to grow. The problem with that is it implies the comfort zone is a bad place. And it isn’t.
It is true you need to leave it to grow. But you don’t always need to be growing. Sometimes you need to care for yourself. You need to recharge, repair, recover. During those times finding your comfort zone and staying in it is the right thing to do.
I recommend you be aware of your comfort zone and leave it when you want to grow and improve yourself. And stay in it when you need to get yourself back to where you need to be. This is the best way to use your comfort zone.