Breaking free from inertia
אף מי שאינו נזהר מפת של עכו”ם, בעשרת ימי תשובה צריך לזהר
Even someone who normally eats [kosher] bread baked by a non-Jewish [baker], during the ten days of repentance one must be stringent [to only eat bread baked by a Jew]
The seven days between Rosh Hashanah and Yom Kippur, including the holidays themselves, are known as the aseres yemei teshuvah, the ten days of repentance. They are days reserved for introspection and correcting past faults, with the hopes to better one’s behavior for the upcoming year. There is a halacha, Jewish law, that one should try to take on extra chumros, stringencies, during this time. It’s not meant to be a lifetime commitment; just for these ten days. The paradigm example that is given is that for these ten days one should be careful to only eat bread baked by a Jew.