Any other methods of counseling for long distance relationships?

My girlfriend and I are at the verge of breaking up. I simply don't know what to do anymore. I've sought the help of her friends, my friends, both my parents and hers but to no avail. I've also watched videos online and read some international dating blogs, personal blogs, open forums on dating, etc. I'm about to give up. Talking to her doesn't even work anymore. After being together for about 8 years, I guess there's nothing much to do at this point. Can someone give me some advice about this?