But when you're trying to beat the odds up
Been trying to keep your nods up and you know that you should know
And let her go

from Guy Sebastian (Ft. Lupe Fiasco) – Battle Scars Lyrics on Rap Genius

Meaning

If you want to have a better and positive future, then you should move on.

Play on the phrase “beat the odds” — you’re beating up the odds as if this is combat.

i.e. End the war (let it go), because you can’t win.

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