Did I make a mistake in Financing? How long do you finance?

I made the same mistake with a truck. Impulse buy and I was upside down. I ended up selling it, cutting my loses, paying off what I owed and calling it a lesson learned. I then saved up and bought a pop up camper for 5k.

Please don't expect to pay 15 years on that thing. It's not worth it. Everyone makes mistakes, but your's can be fixed. Cut your losses and sell it.