Lease option money can pay for your vacancies if you know how to structure your contracts! I give you the complete contracts (sample forms that are filled out and blank forms that you can print out and use) in my book, "$0 Down Real Estate Investing With Bad Credit And No Job!" You can find out more about the book. Just for those of you who aren't familiar with the process of Lease Option, here it is.
So if you see yourself in the above, realize what you are doing, and either move forward and do something or stop wasting everyone's time, including your own, and resign yourself to the life you have. Remember, it's no one fault but your own that you have the problems you do, especially if you do nothing to change them.