In the first JF I'm fairly certain I didn't meditate once. I wasn't a regular back then. Now that I have meditation working with me I intend to use it to help me clear my mind of cravings during the second JF. I also keep a journal of the days. I find much of what I wrote to be repetitious nonsense and that's okay as it is really an outlet for my mind to stop thinking about things. I find that when I write things down my mind is triggered to let go--I won't forget the message because I've written it down. Another tactic to deal with cravings is to accept them as they are. When I quit smoking I did a lot of reading on addiction. The books I read all indicated a craving lasts no more than seconds. I knew I had the willpower to outlast cravings despite the mind doing funny tricks on me. I would usually notice the craving, count for the seconds it lasted and be amazed how it disappeared. On occasion a craving would return three or four times in one hour and I would repeat the process--but this was rare for me.
I recognize cravings will come and go on the JF. With any luck they will amuse me--and quickly go away.