I am having so much trouble staying motivated. I have lost 8 pounds total, I started South Beach in January over the course of a month and a half I lost 8 pounds. I was very motivated when I started, it was a new year, my 40th birthday is next year and I want to be thin, I have a vacation trip planned for October to Disney World with my family and our friends, these were all good motivators for me in the beginning. But now the weight loss has pretty much stopped, I can't seem to stay focused, I have lost and gained the same two pounds over and over again for the past couple of months, I'm very frustrated, I don't know what to do at this point, I feel like I am all over the place with my eating, one day I'm on plan and the next I can't figure out what I'm doing.
Is anyone else having this problem?
What got you motivated to lose weight and what is keeping you motivated throughout your journey?

I guess when I'm in a size 16 I'll go buy a pair of 12 or 14.