You need to get yourself in the right frame of mind to do the diet, I found that after a year of healthy eating, I just wasn't getting anywhere fast (took me a year to loose 3 stone), after watching various people succeed on lighter life, I found exante and hesitated for about a month as to whether to purchase, in the end I gave myself a week to enjoy myself eat what I wanted when I wanted and then when it came to the start day it was a welcome change, a week of eating rubbish made me feel so ill. In the first week I lost 10lbs and went down a dress size, the next week I only lost 2lbs but it was better than nothing, im coming to the end of week 16 and im still going strong, that couple of pounds off each week keep you going. Even if you only lose half a stone before your holiday its a step in the right direction. Good luck.