Each January, roughly one in three Americans resolve to better themselves in some way. A much smaller percentage of people actually make good on those resolutions. While about 75% of people stick to their goals for at least a week, less than half (46%) are still on target six months later, a 2002 study found. Here are some healthy resolutions you can stick to: 1. Lose weight: Set a realistic plan for weight loss this year if you need it. Do not try to lose 10 pounds in a week. Think long term. Also, plan for bumps in the road. Use a food journal to keep track of what you eat and have a support system in place. 2. Stay in touch: Research suggests people with strong social ties live longer than those who don’t. In fact, a lack of social bonds can damage your health as much as alcohol abuse and smoking, and even more than obesity and lack of exercise, a 2010 study in the journal PLoS Medicine suggests. 3. Quit smoking: Fear that you’ve failed too many times to try again? Talk to any ex-smoker, and you’ll see that multiple attempts are often the path to success. Try different methods to find out what works. And think of the cash you’ll save! (We know you know the ginormous health benefit.) 4. Save money: Save money by making healthy lifestyle changes. Take stock of what you have in the fridge and make a grocery list. Aimless supermarket shopping can lead to poor choices for your diet and wallet. 5. Volunteer: Our happiness also increases when we help others! And guess what? Happiness is good for your health. A 2010 study found that people with positive emotions were about 20% less likely than their gloomier peers to have a heart attack or develop heart disease.