Gratitude is a choice, but also a practice

As the weeks go by, it amazes me how fast we can adapt to the new normal. I do what I need to do, and then my new chill time consists of texting with my niece about which face masks are the cutest, watching martial art movies, and indulging in some social media binging. 
On these binges, I see many posts like “anxiety is a choice,” “anger is a choice,” “gratitude is a choice.” I totally get and agree with this sentiment. But I also wonder, is it as simple as that? Do we have a choice when our nervous system is in overdrive? When our survival brain is pumping adrenaline like mad into our bodies to keep us safe from what it perceives as aggression?
So perhaps it’s not really a matter of choice, but a practice, like in martial arts. Instead of repeating a move over and over until it becomes second nature, we learn how to come back to our breath when we lose it. To our bodies. To the present. Over and over. To let go of the future, of over planning, of anxiety. To forgive ourselves when we become angry or forget to be grateful. Over and over, until it gets easier.
Remembering that, like in meditation, getting distracted by anger or anxiety is not a “fail.” It is part of the practice.
That the healing is in the return.
Not in being always perfectly centered.