Just so you know, it was the longest one I've had in over 10 years and I feel quite accomplished.
I've had several breaks from the internet for a month at a time; the first was the most difficult with me thinking about it fairly often, but after that I didn't miss it at all, although it probably helped that I was on semi-holiday outside of my home and its related routine at a time.
I've also done the checking one's e-haunts once a week thing and it works alright, although I just spent the same time on alternate sites instead of doing anything productive, but it's still a nice breather and relative mental reset.