The craving ceases if you just maintain sobriety for awhile. I just recently quit a pretty strong ongoing addiction with weed, and the hardest parts are definitely in the first weeks and month or so.

After that, your brain balances out and adapts to the new state of things. Keep faith man, push through, find your strength. Life gets better the more of these negative attachments you get rid of in yourself. I'm sure you might know this already, but meditate in the morning and at night, even just for 15 minutes. It really helps foster calm and the ability to be content without using.

During the day when I was quitting, I drank green tea every day. The thing with cannabis is it erodes your memory. This is important because memory and self control are based in the same parts of the brain, so when you erode your memory, you erode your ability to exercise self control. Tea, on the other hand, enhances your memory, which might help you recover better from the cannabis abuse.

If you are having a very difficult time, there is a supplement which might help. It's called N-Acetyl-Cysteine, it's an Amino Acid, and it has shown the ability to decrease cannabis cravings, as well as helps against a shockingly wide range of mental illnesses (which might hint at shared pathologies in addictions and mental illnesses such as depression, bipolarism, anxiety, even schizophrenia and autism). It's very safe too, as long as you use it just periodically. Read this article on it: http://www.eurekalert.org/pub_releases/2013-10/econ-naa100513.php