Cravings are destroying my diet!!!

I was doing very well for 8 months, and then I went to Hawaii. I over indulged in all of the guilty foods and restaurants there. Now I am home and it's been two whole months of trying to get back on track! Every night around 6pm+ I get these insane cravings for bad foods!! Mostly restaurants and fast food. I don't know what to do, I can't stop them, but at the same time I know I didn't have them before I went to Hawaii. Why all of a sudden all of these cravings. I want what I had two months ago, NO CRAVINGS. They are destroying my health. Anyone have any suggestions?

For me cravings usually mean I am not getting enough nutrition or calories.

Have you changed your activity level lately?  Are you doing more?

There's 4 things that often cause cravings.  (Well, there's probably more than 4, but these are the ones that jump to mind.)
Eating too few calories.
Eating too much sugar.
Eating too many calories from fat.
Eating too few whole grains.
Take a good look at what you've been doing, and see if any of those is the culprit.

whenever i have a cheat day or cheat meal, the next day or two i tend to go over my calories a bit.  i get all those cravings too and i just can't resist!  i think plaidpooka is right about too much sugar and fat.  eating all that junk makes you want it more later on.  i just make myself stick to my plan, but allow for a tiny bit of what i'm craving (as long as it's not a trigger food).  after like 3 days i'm completely back on track again.

stay focused and remind yourself why you're trying to eat healthy.

Try eating a banana. Sometimes cravings are a sign your body is needing something, so you eat everything in sight until you satisfy it. Potassium seems to be what I tend to need. Also, sometimes I just eat a Vitamin B complex. This is supposed to free up stored fat to metabolize as energy.