I am sorry. It's okay. Just start over. I really believe in the support group called Celebrate Recovery you can find one near you. They are everywhere. They are accepting and loving and it is the 12 step program with a biblical view. You can do this. We fall down we get back up again. Write out your relapse prevention plan like quit 4good says, naming every trigger and every solution. I am glad you posted. You can quit, you can quit. It's not that big of a deal. Forgive yourself and start over. Love and hugs!

this "f$%%#" disease is killer, i know exactly how you feel, i try so hard, and then wham, all sensibilities go out the door, im glad you're here and you admitted it, and let's move forward!!

I had many tries at quitting, it was when I found myself continuing to gamble when I did not want to, (doing something when you don't want to may be a short definition of addiction), that I remember expressing my frustration to my counselor, who told me that I needed to look at why that might be. Was it that I didn't really want to quit? (In my early attempts, but not the last time.) Was it that I didn't feel I deserved to have peace, joy and a better life? BINGO! That was me 2 years ago. It took me almost another month after starting treatment to actually get quit. It took working at forgiving others and myself and working at loving myself. (See Louise Hay:How to Love Yourself) It is really difficult to befriend myself when I am angry at myself.
Feeling numb was my ultimate goal when I was actively gambling. The fact that the gambling sucked the whole time you were there and was not fun, says to me that you have gained internal awareness - which I'm guessing before you made attempts at abstinence you never noticed any awareness. So you are not at square one, you may be back at the drawing board of your relapse prevention plan, but you have part it outlined, you have a start, it is not blank, you just need to make modifications and adjustments. If what you are doing isn't working, do something different. You can do this, but be gentle with yourself. Treat yourself as you would your best friend.
Hugs

Hang in there.... Never forget that you made some progress. You can do it!