Impossible Goal

I am stuck on deciding my impossible goal. Something like making $1 million in my business is something that feels like it’s within my control. But when I think of picking an impossible goal like getting engaged or getting married or meeting the man of my dreams, something in the relationship sector, I have no idea how I would fail that out. It seems like it’s not within my control. Can you help me decide how to pick an impossible goal when it depends on another person? Can getting married be my impossible goal? I’m not sure how I would fail 25 times towards that or who I would have to become in order to achieve that goal.