I have a poor credit score. I am approx 15k in debt from cc – what is the best way to bring up my credit score

These debts are from 2003-2006. After I got divorced everything was in my name and I let it all go. I am not paying on anything. I only have 1 cc in good current standing. I am afraid of debt consolidators as I have heard they hurt not help credit. Should I see a credit counselor? Any advice? I want my perfect credit back. Help.