I’ll let you walk in my shoes once I find a New Balance
A double entendre:
To walk in someone’s shoes, you would have to follow the same path they went through in life in order to understand them. In this case, Joe is saying you’ll be able to once he finds a new balance, or a better way of going through his life and dealing with the monsters.
New Balance is a name brand footwear (athletic). Going with the line above (few talents and new challenge), Joe makes it sound like he’s only got one shoe, hence finding “a New Balance.” Maybe one shoe is torn up or he’s tired of wearing Adidias.
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