Punkfolkrocker: "I'm lucky so far I havn't succumbed to diabetes, so I know I gotta do something positive again about diet & exercise soon, before it's too late..."
It sounds like you already know what you need to do, but motivation can help. I'd recommend watching 'Vedgucated' and 'Forks over Knives' - you may be able to find them online free somewhere if you search about a bit.