Just a quick, practical tip today, which has been workin well for me:
I took some of my big nutritional bad guys (pizza or ice cream for instance) and relegated it to 'reward' status instead of 'regular food' item status.
I didn't like the prospect of NEVER eating those things again. In fact that is probably why my past attempts at losing fat failed - too restrictive and unlivable.
Now, I have pizza once in a while, BUT I have to EARN it.