Well I have found that the mental part of the Master-Cleanse goes up and down; it is only the physical part that gets easier after days 3 and 4. I often have a really hard time on day 8 or 9 going though to day 10 because I tell myself all sorts of lies like, Oh I did this long enough, etc. But so far I have persevered and I feel SO good about myself that I was able to achieve my goal.