Actually, you have several options. Although you never stated whether your loan is a commercial or residential mortgage, I'm going to approach this from a commercial real-estate perspective.
First, actually you can try to renegotiate the terms (reduce the interest rate, reduce the principal, increase the amortization period, etc) of your loan. (More on this later.) About a month or so ago several lenders have began to take more of a proactive approach on handling the loan re-modifications. They want to show good faith to Congress, investors, tax-payers and borrowers alike, and they want to show the aforementioned parties that they're trying to work with borrowers before a borrower gets into trouble (ie misses a payment or defaults).
Second, if your property isn't already zoned for its best and highest use, then you can go to your local office of zoning/planning to request to change the use (or zoning) of your property, so that you improve the land for both commercial and residential uses. Modifying the use of your property will immediately increase its value, because your property can be improved in more ways.
Third, while you're there at the local office of zoning/planning, also request to partition your 6 acre lot into several smaller lots. If they approve your request, then get a plat map, take that to the commercial banking division of your lender (or take it to a commercial lender of your lender doesn't have a commercial division), and ask to refinance or to modify the terms of your loan to include a partial release schedule. This way you'll be able to sell and/or rent your land as individual plots.
Fourth, if your land is in an area that's either in hot demand or in the line of progress, then you might want to reach out to some other developers and investors to see if they're interested in all or a portion of your land. If so, then you could either sell or rent the use of all or a portion of that land. If you opt to rent the land, then you should look into doing a ground lease.