There's a better guarantee of success if you stick to resolutions that you actually have control over. Want to lose 15 pounds? Well, sticking to a healthy diet and exercise routine is more important than the number on the scale. And you can't force those pounds off. So, stick to a resolution like 'I will go to the gym five days a week and I will fill half my plate with fruits and vegetables at every meal.' These are things you have control over and they will help you reach your ultimate goal of weight loss.