I attended the Desmond Course earlier this year. Initially I was a very reluctant attendee - I went because I didn't wish to be seen by the medics as non-compliant, difficult and argumentative. To my surprise I found the course really helpful, it covered diabetes (cause, diet, medication, complications) in a simplified but not dumbed down way, all queries raised were answered.
The course drew my attention to two things: Firstly, inequality of care - my GP gave me a blood glucose monitor and prescribes blood glucose monitoring sticks, some people said they have to pay for them and others are still reliant on urine testing. Secondly, I was very shocked to learn that some people with Type 2 diabetes require really very hefty doses of insulin in addition to tablets such as metformin to control blood sugar levels.
I left the day with a reinforced intention to a) continue keeping a daily food intake diary - it draws attention to between meal snacks and the actual quantity of food consumed, b) maintain my daily 30 minute exercise regime. c) monitor post prandial blood sugar levels