As a quick addenda to that first post -
I've worked out what I think is a pretty solid motivator for slogging away at this. My ma's getting married in August, and it'd be pretty nice if I had a chin for the photographs. What I've found helpful is comparing passport photographs that are a year apart.

The first is from January 2006, the second from January of this year. While I still have a face like a misshapen potato, it's not nearly as bulbous nor as frighteningly maudlin. So using all the scientific projection capabilities I have at my disposal, by analysing the difference between those two images I can accurately predict that by the time I've reached my target weight I'll look something like this:
What? It could happen...
So that's the first chapter of my blog. Self-indulgent, narcissistic and borderline introspective. Everything a blog should be!