Mine is probably because I'm trying to get pregnant and I know that your weight plays a part in that.
Secondly if I do get pregnant I don't want to be overweight and pregnant or be a fat mummy.
The way I see it it's win win. I I get pregnant as a result of loosing weight then I've achieved my goal. If I loose the weight but I don't get pregnant then there are still other options for me to have children and I'll be healthy enough to look after them for a long long time.
what are your motivators?