I am sometimes asked how I manage to get healthy foods into my diet on a consistent basis and I often point them in the direction of 'The Optimum Nutrition Cookbook' see this link - http://www.awesomewheatgrass.com/site/1407167/page/882482 for more information.
In the early days when I decided that my diet was an important part of my life I did find it difficult to keep a consistent - high quality diet going. By finding out more ways to have a good diet than ways to slip into poor eating habits it does become easier.
A book like the one mentioned above does help.