Take each day as it comes, before you know it you'll have reached a week and you'll be ready for a whole new one.
This diet will probably be the most difficult one you've ever been on but, you'll also find it's the easiest if you obey a few simple rules: drink the water, stick to the 3-4 CD meals, don't cheat.
I used to take a nap during the early days whenever I started to feel peckish, do whatever works for you to stop you picking. For some it's brushing their teeth, other come on here, some take a bath or read.
Space out the CD meals and your fluid intake evenly. I try to delay having my first shake of the day until 9.30/10am, if I have it any earlier I find that I feel peckish during the evening. I'm on 3xSS per day but, on those days I struggle I have an extra one. For the first six weeks of the diet I had an extra shake on average once a week. Then I slipped up and had a couple of biscuits one day. I've struggled ever since to get back on-track, it's taken a while to get focused again but, I'm there now and re-started successfully yesterday.
Make sure this is your first week on CD not your only one, good luck.