Hi Jane,
I'm sure others will chime in on this to give their opinions, and maybe a litle science, too.
I don't think there's a way you can tell yourself, or make yourself, stop missing the foods that you like; if you succeed in doing the diet for a longer period of time, your cravings will change in and of themselves - or at least, that was my experience. I began to feel less hungry, and when I looked at some of the foods that people around me were eating, they seemed less appetizing.
I think a really important factor is variety. Knowing I wanted to lose weight more than I wanted the taste of pizza in my mouth for the 20 minutes it took me to eat a piece or two helped me to stick to eating specific foods, but other people would probably find my repetitive diet boring. But after those first, strict two weeks are over, you'd be able to add in more options and try out some of the recipes that you can find on this site that offer you more variety than just meat, cheese and salad.
Based on the amount of time you've tried to put into doing LC, have you ever considered looking at other diets or programs - Weight Watchers, for example - that might offer you more variety and may be less frustrating?
In the meantime, if you're determined to do Atkins successfully, maybe you should try slowly changing your diet before jumping into induction. If you suddenly change from having a wide selection of appetizing foods one day to just meat, cheese and salad the next, that's probably going to be difficult to handle mentally. Maybe easing into it - for example, spend a week having a LC breakfast and leave the other meals the same, gradually introducing more LC options until you feel ready to take the step to start induction (y'know, less "cold turkey") - would help you.
I wish you the best of luck in trying to lose weight. Remember that it's important to find a weight loss plan that you can enjoy - if you try to push yourself to do something that you don't, you'll have a much tougher road. And losing that weight shouldn't be something you suffer to achieve, in my opinion!
Whoops: I almost forgot to say, welcome to the forums!
I think you'll find a ton of great people here who want to help support you in this.