My mind and body know how to heal itself, and is doing so with each minute of the day.

The lining of your stomach is replaced every few days. Nobody consults you about the schedule and it appears on no calendar.

Whatever knows how to do that learned it long before you existed, and it is not waiting on your instructions or your mood. It worked while you were arguing with a parking app. It worked through the worst week of your life. This is no reason to stop taking the tablets or turning up to appointments — those are the parts you contribute — but it does mean you are not the only thing on the job, and never have been.