My suggestion: research, learn and live a diet based on the Glycemic Index (
http://www.glycemicindex.com).
It's mostly about eating "whole" foods rather than packaged and refined foods, but there's a lot more great information at that site. Your food doesn't have to be flavorless - it just needs to be actual food...
This is the "take home message" directly from the site:
* Choose slow carbs, not low carbs
* Use the GI to identify your best carbohydrate choices.
* Take care with portion size with carb-rich foods such as rice or pasta or noodles to limit the overall GL of your diet.