i need a quote/part from the story that shows good triumphs over evil.

O happy living things! No tongue

Their beauty might declare:

A spring of love gushed from my heart,

And I blessed them unaware:

Sure my kind saint took pity on me,

And I blessed them unaware.

The selfsame moment I could pray;

And from my neck so free

The albatross fell off, and sank

Like lead into the sea. (IV.65-66)

The Mariner's big moment of conversion is when he realizes that even the grossest, slimiest creatures deserve love and blessing. He's not even aware of blessing them, otherwise his pride would have put a stop to it, but he does, and the curse of the albatross is broken. The albatross falls into the sea, symbolizing the end of his heaviest burden.