Welcome to SparkPeople!
Just as you said, not eating tomorrow doesn't work, so make sure you do eat tomorrow.
Keep in mind, this is about making healthy lifestyle changes and it's not going to happen overnight, and it doesn't do you any good to beat yourself up about little mishaps along the way. Nobody is perfect, so just take a lesson from today and move forward. Do your best to make some healthier choices tomorrow.
You may find this article helpful to get back on track: www.sparkpeople.com/resource/motivation_ar
Keep on posting on the message boards too! That can help encourage and motivate you to stick with healthier habits as well.