I agree, when I left FB the cravings just like a drug addict were strong. Took a few weeks for them to subside. People need to remember, you won't die without FB, you lived just fine before it existed, you will live again without it. If you fall, do not be discouraged, pick yourself back up, dust yourself off, but recognize what led you to make that mistake. Any addiction takes a few tries to finally kick it, most Neve go cold turkey and make it first time.