The beginning is always tough. For about the first month or so, you tend to be very hungry. I think part of it (for me) was being SO focused on food. I felt my whole day revolved around what I just ate, what I was going to eat, when I was going to eat, etc. I found that it gets easier, but my best advice is to not obsess about food and start trying to listen to your hunger cues.
Also, really try to get your 8 glasses of water in. I use the big water bottles with the sport nozzle top because I find them easiest to drink. The ones I have hold 3 glasses of water, so I drink one by lunch, another before dinner, and the last with dinner.
Keep up the work - and stay positive