Along with what Smashlers said about tracking, plan ahead as much as you can. I figure out my meals a week in advance and I track my entire day either that morning or the night before. It really helps keep me on task and I know if I have extra points to play with. But I also stay flexible if something unexpected pops up or I"m going out to dinner, have an event, am hungry, etc.
Don't be afraid of the weekly points, they are there for you to use!
Breakfast really is the most important meal of the day (in my case, it's also usually my biggest) and stay hydrated. A lot of the time we feel hungry it's really dehydration so drink plenty of water.
And this is a great place for information, so don't ever be afraid to ask questions in the forums
Would you share your success?
