Do the best with what you've got.
When people consider making improvements in Shmiras Haloshon, they sometimes drop the idea as unrealistic. “Can I really say that I’ll be able to avoid loshon hora forever? What’s the point of trying, only to fail?”
But in the month of Kislev, we learn that this line of thinking is false. It is exactly the opposite of the approach the Maccabim took when they entered the Temple. They looked for pure oil and found only enough oil for one night. They did the best they could with what they had; in that merit, Hashem provided the miracle.
Chanukah teaches us that when it comes to serving Hashem, if we give it our all – however limited that is – Hashem provides the rest.