I ain't play the hand I was dealt, I changed my cards
from Kanye West (Ft. Jessica Rivera) – Last Call Lyrics on Rap Genius
Meaning
Kanye didn’t like the path he thought fate had for him, so he made his own way into the game of hip-hop.
Basically, record execs didn’t give Kanye West a deal because they thought he was wack (The hand that was dealt by the execs), so he took a different route (didn’t give up by accepting the record execs hand)

This might also be a reference to the line from Jay-Z’s song “Justify My Thug”
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