Here's a possibly worthless idea. But you never know.
People thrive off of competition. It's in most of our nature. If you have the drive to succeed on your own, you compete with yourself and the world around you every single day, by choice. Challenge your "partner" to a 2 week stint of working separately to see who can make the most cash. Make the loser pay the winner $20 or $50 or whatever. Then if you smoke him, you keep all of what you did, plus a few bucks of his, and it might open his eyes a little too.
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