I used to hustle - now all I do is relax and strive
Of course, striving is pretty much the same as hustling, or at least similar enough that “relax and strive” doesn’t constitute a total reversal, as the “all” suggests, but more of an augmentation, as if to say “I used to hustle, but now I relax sometimes also.”
… or he could be referring to the fact that he is getting on with rap; striving for better. Also hustling leads to a hectic lifestyle, so now, since he is no longer doing illegitimate business, he is able to relax.
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