Part of eating healthy is looking at what you are eating now and making the changes needed to make it a healthy thing. While this may initially sound like deprivation, it helps you to sustain a similar pattern of eating, but enhances what it offers you in terms of nutrition. It's just as much of a change of mind as anything else.
For example, if you're used to having a burger for lunch, it may be a good idea to turn to a tuna or chicken sandwich on granary bread. The idea remains the same — meat, bread, seasoning — and if it appears a little tasteless in contrast, there's a ton you can do with pepper, paprika or a number of other light spices.