If you try and find some activities that keep your body moving during the day, doesn't have to be a gym, anything will do, even gardening if you have one, it will help a lot with insulin sensitivity.
And treat yourself to some good cookbooks and discover the world of healthy foods and meals. Make cooking a fun thing. A good starting point isThe Hairy Dieters: How to Love Food and Lose Weight and Hairy Dieters Eat for Life. WH Smiths always have them in on a special low priced offer. Lots of easily adapted recipes, great food and you don't need any special skills to make it!