Just thinking about a good meal can get you over a craving and keep you going until the next time you eat. It's mind over matter when it comes to weight loss, so use visualization to get to your goal.
You don't have to blaze through a workout at record pace. When using weights, do your reps slowly and make 'em count! You'll see results in no time, and you'll have fewer injuries.
Broke that resolution already? Who cares? We all have trouble sticking to goals. The key is learning how to get back on track and creating more manageable goals that you CAN keep.