Meet Jonathan.
The year leading up to my diagnosis I was lethargic, sick a lot, and slow to heal. 6 months before my diagnosis I broke 300lbs and decided to begin doing something about it and signed a gym membership. 6 weeks before diagnosis I was 345lbs, going to the gym 5 days a week for 1.5 hours a day, ravenously hungry all day long, and still gaining weight.
Being diagnosed as Type 2 diabetic and reading Gary Taubes and Dr. Bernsteins books literally saved my life.
Meet the new Jonathan.
Doughnuts. I still lust after a good boston creme doughnut. In all seriousness, the biggest challenge was getting rid of carbs because my wife was not following the diet. When she began following it after reading Gary Taubes book it became much easier.
ADVICE:
It REALLY helps if anyone living with you also follows the diet!
Experiment at restaurants and find some places that are quick and easy (Jimmy Johns, Hardees, Greek take out places[we both love getting chicken alfredo without noodles]) where you can get low carb meals on the go. Also, find about a dozen places that serve awesome salads, you can never have enough salads!