Good luck with your diet!
I've been on the Adkins/south Beach diet for about 2 years now. Dropped from 250 to 208l lbs at last weigh-in.
I don't weigh often... just when I take my folks to the Dr. for monthly follow-ups.
I kinda do my own version of the low/no carb diet. It is important to really, really cut back on carbs for 1st 2 weeks. There are books you can read about why. I've dropped white potatoes, white bread, white sugar and sugar stuff. Fortunately, Splenda, although expensive, is extremely acceptable to me in iced tea, etc. I had to give up regular cokes, but now there are versions with Splenda in them...
I've found it relatively easy to follow... I get to eat meat, cheese, eggs, bacon, BBQ, salads, stuff I really like... Fortunately, I don't have health issues complicating things. I've found that truly, the carbs cause me to be hungry now... so that's a signal that whatever I ate recently was "over" the carb limit for me.
I think it's a personal metabolism thing... but it is the first diet that I've been able to stick to, not be hungry, and lose weight, slowly over time and keep it off.