Instead of eliminating everything you enjoy, why don't you try reducing your caloric intake.  When I began running a few years ago that was the approach I took to losing weight.  I did change some of the unhealthy things I was eating, but for the most part I tried to train my body to eat smaller portions of the things I enjoyed.  I counted all of my calories to ensure I wansn't going over my daily recommended amount. (I got this amount at WebMD, I believe I did a search on biggest loser diets and it took me to a weight loss area.)  Anyway, I also incorporated extra meals a day so that my metabolism didn't have a chance to slow down. The last thing I did was eliminate any meals after 7PM and all soda from my diet.  It worked really well.   Hope this helps, and good luck to you!