I tend to find that my magic number is about 55kgs. I am a short arse - 5'4 if I am being generous lol- so I tend to find that I don't look as slim as I would like if I am more than that. For me to feel slim I generally get to a size 8. I haven't been that small for a few years now, having been steadily putting on weight since moving to perth 4 years ago.
Except for when I was preggers! lol then I couldn't put on weight if I tried, even lost 3 kgs near the end...
More than made up for it now though! I have NEVER been this big, and it is scary. I dont want to end up on the Biggest Loser. this is morbid, but my mum was a big lady, just about always had been. But when she died, the effect of the cancer on her body was horrifying. she didnt lose weight. The meds she was on at the end made her bloat. But none the less, I dont want to look like my mums body did when she was dead. That is my motivation. I NEVER want anyone to see me like that, alive or dead. Extreme I know, but it is the only motivation I have that is strong enough to help me lose the weight and keep it off.