Basically the best thing to do is between now & 2036 try to pay more than your minimum payment which is just interest. By 2036 you would have satisfied just the interest portion of your loan & the principal will now be due all at once.
A lot of people took out these kinds of loans for a few reasons
Because they didn't know exactly what the loan type was.
Because they were going to flip the property & wanted the low interest rate
Because they had planned on refinancing the home.
You might want to check to see if your credit rating is good enough to refinance, if not, try and bring it up so that close to the end of the loan term, you can refinance the 89,000.00 yes, you will be paying for a mortgage still but it's not a foreclosure on your credit this will help you in the long run AND because you're now trying to pay more every month it wont be 89k the bank is refinancing it's a lot less so you're credit and income don't have to be extremely high.
Good luck! Things in the mortgage industry 4 years ago were tremendously different so, don't kick yourself for the decision of a balloon mortgage.