What to do when you find your doppelganger

I did it. I've seen my doppelganger. Not even as a face in a crowd, but on a billboard.
This guy on the right:

Compare with me:





















Uncanny, no?
In any event. I'm told that when I see my doppelganger, I'm supposed to kill him because he's trying to take over my life. I'm unsure why a guy who's on radio wants to pretend to be a young guy with crippling amounts of student loans.

Then it dawned on me:
I'm the doppelganger