Ooft loads of things - clothes and appearance and attractiveness are big ones. Health reasons. Confidence reasons. A desire to go out and live life in the way I want to without my weight holding me back. To not be the fat one. To feel confident travelling to other countries and not feeling massive.
I'd say something that really motivated me on this year was...throughout most of my fat life I have never really encountered anyone who has taken issue with my appearance or at least I haven't heard it or been told it to my face. However, a couple of months ago the OH and I were walking down the road hand in hand and this guy (who was no oil painting himself) walks by and says "my god, you're brave mate, going with her" and walks on. This was around 11.30am, on a Sunday, so it wasn't even that likely the guy would be drunk. It just made me feel so sad that someone would do that, he ruined my day and made me feel terrible about myself and probably walked on without giving it a second thought. The fact that someone who knows nothing about me or the type of person I am could affect me so badly made me realise how miserable I am about this. It didn't matter to me then that I knew I was a good person, that I work in a job where I get to help other people every day. Things like my kindness, my intelligence, my morals and my values - all of it meant nothing in that instant where I felt reduced to a feeling of worthlessness because of my weight. I really hated that and I realised it wasn't the guy who upset me so much, it was me feeling terrible about the state I'd gotten myself into, the horrible guy in the street was just a trigger. I think it was that moment that really made me stop ignoring my problem and decide to do something about it.