Here's what he does:
* He expresses his emotional turmoil. He feels a strong connection to the play, finding it a "mirror" to his own situation. He's torn between his desire for revenge and his fear of acting rashly.
* He reflects on the players' ability to evoke emotion. He recognizes the power of art to stir our hearts and minds, a powerful contrast to the real-life situation he's facing.
* He questions his own procrastination. He berates himself for not taking action, using the players' passion as a point of comparison.
* He resolves to "catch the conscience of the King." He decides to use the play as a trap, hoping to expose Claudius' guilt and justify his own actions.
This pivotal moment marks a turning point in the play. Hamlet's internal conflict intensifies, and he decides to take a more proactive role in seeking justice. The play becomes a catalyst for his actions, leading to the dramatic events that unfold in the remaining acts.