The moment I understood those four locks, a patient I'd been seeing for years made a sudden, painful kind of sense.
His name is Arthur. Sixty-six, retired — and the most disciplined patient I had. Three years earlier I'd given him the standard plan: cut the carbs hard, walk every evening, never miss a dose. He did all of it. Every piece, every day, for three years. And his numbers crept up anyway.
He'd sat across from me one afternoon and asked the only question that mattered: "I've done everything you told me. So why is this still getting worse?"
It wasn't the discipline that was wearing on him — by year three, the carb counts and the evening walks were just what he did, no different from brushing his teeth. It was the number on his last few lab reports. His A1C kept creeping up, visit after visit, no matter what he'd actually done in between.
It was the quiet fear of where that led — that the next step wouldn't be a conversation anymore, it would be another medication, and eventually one more after that. More than anything, it was wanting one simple thing he couldn't seem to get: to just see the number come down for once, instead of explaining away why it hadn't again.
And underneath all of it, the thing he never said out loud: maybe this was just what was left for him now. Not getting better. Just watching it get worse, a little more, every time.
At the time, I didn't have an answer for him. Now, with those four locks in front of me, I finally did.
Cutting carbs hard, walking every evening, taking his medication exactly on schedule — three different efforts, three years of real discipline. But all of it, every piece of that plan, was built to turn the exact same lock: how much sugar entered his blood after a meal.
The other three had never been touched. Not because he wasn't trying. Because nothing in his plan was ever built to reach them.
Patricia, Raymond, and Eleanor had stumbled onto all four by accident. Arthur had spent three years turning one key, harder and harder, on a door with four locks — and no one had ever told him the other three existed.
He wasn't failing. He'd been handed one key for a four-lock door.