Say Plainly What Is Not Yet Clear
Before explaining a Mishnah, he admitted what was unclear to him, then reasoned his way to an answer.
The Mishnah in Yoma says that a substitute kohen is prepared in case the Kohen Gadol becomes unfit before Yom Kippur. The Shaagas Aryeh begins his comment with an honest admission: it is not clear to him whether the substitute is appointed together with the seven days of separation, or only later, even on the eve of the day. Then he reasons it through. By logic, the closer to Yom Kippur the better, since a substitute named early might himself become unfit or die, and a third would be needed. But the Gemara calls the Kohen Gadol a zealous man, and a rival waiting in the wings makes him more zealous still. On that basis he concludes that the substitute should be named seven days ahead, so that the concern accompanies the Kohen Gadol throughout his preparation.
Source: Gevuras Ari, Maseches Yoma 2a, on the Mishnah about preparing a substitute kohen
The Shaagas Aryeh was among the sharpest minds of his century, and he still wrote that something was not clear to him before he went looking for the answer. Today, pick one question you have been avoiding because you feel you should already know the answer, in learning, at work or at home. Say it aloud to someone who can help, or write it down. Then take one small step toward answering it. Honest uncertainty is the beginning of understanding, not a sign that you have failed.