I did the same thing about 10 years ago. End of the story is I still own a couple acres with the best view ever, but I'm paying taxes every year, and my equity is tied up. So, instead of being an asset, the vacant land is only a liability. I've found someone who wants to trade the land as a down payment on a 7 plex that is a cash cow. However, we're having a hard time convincing the lender that this is a good idea, so I'm hustling that end of things to see where it can go.
So, I've had several years to think about it. Here are the options that I've come up with.
1. Keep the land... hopefully you are not paying much tax on it... hopefully taxes are lower than inflation.
2. Build on it. If you're not a builder, this is easier said than done. Maybe you could partner with someone?
3. Sell it. Yes, you might take a loss, but if you can get back close to what you put it, it might be worth it to get your money moving again.
4. Sell it owner finance. This is a good option because if you can find a buyer, you might be able to ask higher than market since you're carrying the note. So, this is a good option since it gives you a return on your money, but not as good as getting cash and reinvesting in something with cashflow.
5. Trade it to someone for something else.
I know my advice sounds like you made a mistake and need to get out. Don't take it personal... just pretend you are watching me send a note to myself 10 years ago.