Track your food before you eat it. That way, you know before you eat dinner how many calories or fat you have left. Tracking after you've already eaten is too late if you've gone over on any dimension. If you only have a few hundred left, you have a chance to change what you're going to eat
I keep a pitcher on my desk at work that holds exactly 2 litres. I fill it up in the morning when I get to work so I know just by looking at it if I'm on track to get all 8 glasses of water that day. If there's any left when it's time to go home, I know I have to drink more in the evening
I keep a bowl of pink wintergreen mints on the coffee table. I find when I need something sweet, instead of reaching for the chocolate, I pop a couple of those in my mouth and suck on them. They're just sweet enough and the mint cleanses my palate. And they're only 12.5 calories each.