This is the 16339th most frequent Polish word.
uzmysłowić
"Uzmysłowić" means "to make someone realize or understand."
Here, "uzmysłowić" is used reflexively with "sobie", meaning "to realize" or "internalize", applied to oneself.
Próbowałem uzmysłowić sobie wagę tej decyzji.
I tried to realize the importance of this decision.
In this case, "uzmysłowić" is used transitively to indicate making someone else understand or realize something.
On uzmysłowił mi, jak ważne są te osiągnięcia.
He made me realize how important these achievements are.
Here, "uzmysłowić" is used in a context where addressing a group to make them understand or realize something is described.