I did two 10 day meditation retreats a long time back. No cell phones, no internet, no computers, no talking, no reading. The first time, the first two days were hell, I craved for listening to music, talking to people, programming, even simple daily routines. Then at some point comes acceptance and over the retreat you mind can finally unload a whole bunch of crap and then become more peaceful.

(The second time was easier, because you know the strong cravings will come and go away again.)