Same shit, different day, same struggle
Every day seems to follow the next without any real difference. He feels like he’s trapped, doing the same routine and fighting for his music to be heard every day.
This is the problem that many artists like Macklemore face, but he knows that if he persists, he’ll win eventually. He just needs to get through it.
Extremely likely that this line is as much about his struggle with addiction as his struggle to succeed. The following line supports it being a reference to recovery from drug abuse.
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