What about them rhymes I've been jottin'
They are kind of giving me confidence

from Eminem – Legacy Lyrics on Rap Genius

Meaning

This is Eminem’s reason for the transition from pessimism to optimism in the previous line (from “Why bother even trying to put up a fight” to “a lightbulb just lit up in my conscience”):

He feels proud of his early attempts at writing raps (probably in the back of class, a common claim among rappers), and first learned to gain confidence from them.

It is at this rhyme that the beat changes, to become less dark & more optimistic.

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