A side gig for me is teaching sailing, which of course involves in part, how to steer.
*no one* can steer a sailboat (or any boat) bolt-straight, nor can an autopilot--there are always subtle (or not so subtle) corrections, both to initiate a swing, to check a swing, to reverse a swing. But if you do it right, they'll all average out at your desired compass course. And you want to catch a swing early, or it will "run away" with you. So the tiller is almost always in motion, or at least off-midships. More experience, means less back and forth corrections, but you'll never eliminate them altogether, any more than you could driving a car. And you'll get better at anticipating when to start that subtle counter-steer to get, or stay, on course
Breathing is the fine-tune correction in the same way, except that we "have" to move our lungs in and out enough to get oxygen and exhale Co2. easier and more serene than overworking your inflate and deflate buttons, and more fun. So we will always wobble a little. And it's fun to "breathe your way over, or under" some obstacle.
We may struggle to understand this intellectually, but fortunately we have an easier time just getting used to it physically, it becomes second-nature and frees you to think consciously about something else.