TIP: when you go grocery shopping and you buy chips or pretzels or whatever, right when you bring these items home, open them up and divide them into a bunch of ziplock bags. that way when you go to eat some chips you have a little zip lock and that tells your brain that you just ate a bag of chips. Instead of eating the entire chip bag! does this make sense? I promise it works! your stomach is much smaller than your eyes and your body usually doesn't need all that food you think it does! 

Try this out, let me know what you think!