What is the meaning of Hamlet's soliloquy, "How all occasions do inform...," in Act 4, Scene 4?

is reminded
by the King of Norway's resolve that he has been cowardly in pursuing his dead father's wishes
for revenge regicide against . The King of Norway has shown, through his determination and
desire for honor, that he is indeed kingly. By contrast with's lack of resolve, he has made
Hamlet realize how difficult all decisions are and yet how important it is that he follow
through with his dead father's ghost's request to murder King Claudius. Hamlet berates himself
for not using his God-given powers of reason; by not doing so, he wonders if he has sunk into a
"bestial...