Raz I know where you're coming from with the attention span of a ADD child.
I couldn't tell you how many times over the years my weight has gone up and down like a yo yo, sometimes I've put on 10kgs in 3 months, and other times I've lost as much as 12kgs in 2 months.
The time I lost 12kgs in 2 months was when I was single, and towards the end of my goal I was getting a lot more attention, wanted and unwanted attention. The scary part about that was how it took over my life. I would wake up thinking about what I'd eat, and how many points that would cost me, I'd do my shopping thinking about how many points it would all cost me, then I'd come home and eat my dinner. Most days I'd have to go for a brisk long walk, and then I'd come home and think about what I'd eat for the next day. Some weeks when I'd go to weigh in I'd either be really happy, or a couple of times I'd be really upset because I'd put on something like 0.8kgs, which is really nothing, but still it was a let down. After I'd lost the 12kgs my cheeks were sunken in, and after a couple of people told me "you look good, but I think you need to put on a couple of kilo's...", I decided to do that, and I became happy with how I looked.
I guess though all throughout my teenage years I've lost and put on weight again like a yoyo. At the moment I'm starting to lose weight again. Before I went away I was at the worst I've ever been, and really I'm quite disgusted with myself for getting back to that stage, but it was creeping up on me for quite some time, I knew it was happening, but i guess sometimes you've just got to take a look in the mirror and wake up.
Anyway what I'd like to know is how the hell do you keep the weight off once you've lost it? Also how do you lose weight without letting the whole thing consume your lifestyle. How do you manage to do this without beating yourself up when you stuff yourself up in the slightest? I'm sure the mindset I've had with it isn't healthy at all.