But your life's a struggle, right, and you just hustling through

from Hopsin – Ill Mind of Hopsin 5 Lyrics on Rap Genius

Meaning

That’s what they actually want to think. They say their life is a struggle and they are hustling through, but they aren’t going anywhere. Hopsin is making fun of the people who use that statement but don’t actually try to get out of it.
As more explicitly stated in the next lines.

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