I would reiterate everything that Willie has said - but would emphasise particularly that you should plan your meals, and not just the main component but also your veg/salad too. And absolutely, make sure that they are delicious meals.
The other thing is to re-read your low carb books, or search for low carb blogs, and keep reading about this WOE and its benefits, to confirm why you're doing this as well as to inspire you and motivate you.
I did two weeks being really strict and lost half a stone. I was loving low-carbing and feeling good. Then I went away for the weekend and it all went out the window. Eating out and low-carbing is so hard. I stayed with a relative- when I arrived she produced cake she had made especially, followed by meals out or her serving up a pasta bake each day. I should have told her before but I forgot to then it was too rude once I was there. Feeling rubbish, haven't weighed myself yet but I'm feeling fat and craving carbs.
Planning to start again tomorrow so will use those tips.
Also how about starting a one-week mini thread for re-starters just to help each other through that first week of carb cravings? I found the first few days really difficult and it was so helpful reading posts from others experiencing carb 'flu at the same time (as long as you rejoin everyone on the main thread after!)
1. have you got all the crap out of the house? (as much as you can - i know it can be tricky with family members, but maybe you could ask them to forgo the carby stuff for a few days while you get back on track?)
2. plan your ABSOLUTE FAVOURITE low carb meals for the next few days, breakfast, lunch and supper - you need meals you can look forward to and which make you feel satisfied and indulged, not mediocre ones which get rid of the hunger but don't stop you feeling deprived when the siren call of the carbs gets going
3. make sure you have low carb snacks available if you need them (you shouldn't physically need them, but as i'm sure you know, they can help you get through the carb cravings)
4. drink plenty of water (i'm sure you know the drill). helps you feel full apart from all the other benefits
5. don't try to do too much in terms of exercise while you're combating the carb cravings. if you want to exercise, do, but don't push yourself too hard (i did a 40-min exercise dvd followed by a 5k run the other day and nearly keeled over at the smell of dp making toast)
6. change your routine a bit if you can. habits (particularly the bastardy carby ones) are quickly formed, so change stuff about a bit