Many people with poor credit history look to take out loans from friends and family. While this may be a fairly good short term solution, it might not be the smartest of long term business moves. What you need to do is refinance your mortgage and lower your payment. The best thing you can do for yourself is to shop around. I'd be willing to bet that some banks will give you a better deal on a mortgage refinancing than you think they would. Find out who's got the best rate to get the best deal on your loan. This might take a little legwork, but it could pay off. Finding that right bank to give you the right deal on your refinancing will be worth the effort.
Pull your credit report from the bureaus and review it for any negative items (late pays, collections etc) and inaccurate detail. Try to dispute negative items and remove them from the report. If required pay off any unpaid debt. Otherwise, you won't get a low rate and may not even qualify. Of course there are lenders in the subprime market who may offer you a bad credit refinance loan, but it's better to avoid them as they'll possible charge higher rates and fees.
When evaluating different lender offers, in the mortgage loan pre-approval process, pay closest attention to the interest rates they are offering & the closing costs. These are the two biggest factors that will help you figure out which lender is right for you. If one of these two factors is too high, it could offset the benefit of refinancing for you.
If you are making payments on a long term loan, say, 30 year mortgage for the past 10 to 20 years, then refinancing to another 30 year loan will not be a good option as it may increase your overall payment.