I would tell you to do some soul searching
But it’s hanging up in my closet with your skeleton

from Joe Budden (Ft. Kobe & Royce Da 5'9") – All In My Head Lyrics on Rap Genius

Meaning

Royce would tell her to do some thinking about why she still wants to be with him but he kept this thought hidden like his girlfriend keeps hidden her past. This “soul-searching” could enlighten her about her emotional dependence that makes her stick with R5'9" regardless of how much he’s drinking.

“Soul-searching” here could also refer to “look for another soul-mate”

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