I've lost 25 pounds so far and I'm working on losing 15 more...I'll give you some tips that I've found along the way...
*To get over really bad eating habits (like chocolate or too many sweets)...everytime you have a craving for something, eat something healthy. Fruit (esp berries) are sweet and they help with the cravings. I do this every once in a while when I've gotten "bad" about my eating...and after a week I no longer have those cravings.
*Drink lots of water!
*Stay away from the inside aisles in the grocery store as much as possible. Everything you "need" is on the outer rim -- the unprocessed stuff.
*Don't eliminate all carbs (very unhealthy, you need balance) but eliminate starchy foods like white potatoes, white bread, sugar. Switch to wheat bread. Eat red potatoes, they break down into sugar a lot slower than white potatoes and are better for you.
*Explore recipe sites online. I've got a bunch of recipes that are good for you - PM me if you'd like some, I'll be happy to send them over.
*Eat a few times throughout the day, and eat small meals when you do. You should have about 5 small meals rather than 3 big meals. This helps your body break everything down better rather than fasting and holding onto fat, wondering when you will eat next.
*Don't be afraid to cheat if you really want something -- if you have a taste for a cookie, HAVE ONE! Just have one or two, rather than a bunch. You'll be much less miserable and less likely to cheat and blow your whole routine.
*Work out as much as you can...lol, duh! Even 20 minutes of a workout a day is better than nothing.
I probably have a lot more...I'll come back and post more when I think of stuff. If you need a "buddy" to keep you motivated, to vent to, etc...PM me.