First and foremost, make sure to begin thinking optimistically - being determined to maintain a positive demeanor is always, in my opinion, step number one. Next, set small, manageable goals. Having a large, long-term goal is good, but break it down into smaller steps, and always be sure to celebrate every one of your achievements - no achievement is too small! As far as food and snacking, I like to buy fruit and veggie trays - you can pack some baggies full of fruit or veggies for your daily snacks. Also, stay hydrated well. I know some of these things may sound mundane, but I believe them to be essential. Hang in there! Starting out can be very tough, but I think you will find some good motivation on here.