Help! Real Estate ??'s?

I own two rental properties (both are duplexes)...neither of which are providing any cash flow due to the cost of ownership, taxes, utilities, etc. I really need to sell one but with the market the way it is I feel it the hit may not be worth it. I bought the first property 8 years ago and it appreciated nicely...then I used the equity from that one to buy my current house two years ago (bad time to buy) but this property value has decreased. LIkewise, after real estate commissions, I really have no net worth...I keep beating myself about this last purchase and I am constantly stressed and worried about the situation....this investment idea I had has gone south and the situation is getting worse fast...what would you advise me to do?