write a list of the reasons your doing cambridge and reasons you want to be slim and stick it to your fridge, to the cupboard doors and keep a copy in your bag. if you feel yourself wavering then read it
water, as the others have said 500ml - 1 litre bottles make it less intimidating. i keep a diary and write down when i have my packs and each bottle of water so i can see how it adds up at the end of the day
minimins for me is a must, i check in here several times a day. i check the inspiration slideshow and the arcade
i also check out websites for clothes i would like to wear at goal
and if you find times tough then paint your nails, call a friend, go for a walk, take a bath, anything until the feeling passes
before you know it you will be standing on those scales at your first weigh in, extatically happy and excited to see what the next one brings