Forget those cliched lists.
From a heart specialist to an NHS dietician and Macmillan Cancer nurse, we asked those in the know what they'd love to see us all pledge.
A sprinkling of cinnamon
Anna Magee, women's health expert: "I'll be sprinkling cinnamon on my porridge in 2015. One of the most powerful spices, research published in Diabetes Care found as little as a quarter of a teaspoon of cinnamon a day could help control blood sugar in people with Type 2 diabetes.
"It's brilliant eaten at breakfast to help control sweet cravings throughout the day. In fact, when it comes to free radical fighting, antioxidant-rich foods that help fight ageing, herbs and spices could be the next big thing. One teaspoon of ground cinnamon contains the same antioxidant levels as a punnet of blueberries."
Vamp up a toothbrush
Dr Uchenna Okoye, celebrity cosmetic dentist: "My resolution would be to vamp up your toothbrush or have an amnesty of throwing away your manual toothbrush and upgrading to an electric one. Brands like Oral B have a huge range.
"There are so many on the market today and they don't have to be hugely expensive. Plaque is the new 21st century plague, so we need to tackle it for health reasons. Brushing your teeth really can have an impact on your health. We're all happy to spend time cleansing and toning, but don't think of the health implication of our teeth on lifetime health."
Forgiveness to stop stress
Dr Chidi Ngwaba, director of the European Society of Lifestyle Medicine: "As a resolution, nothing can beat learning to forgive. Stress is at the heart of so many chronic illnesses, such as cancer, hypertension, depression and obesity; one of best ways to permanently overcome stress is to practise forgiveness.
"It has also been shown that even thinking about forgiving someone can lower our blood pressure. So if someone's hurt you, don't let them kill you. Get help and do all you can to forgive, and learn to forgive yourself too. "
Men - look after yourselves more
Dr John Chisholm, chair of trustees at the Men's Health Forum: "Lots of men could look after themselves more. Good health is not just about physical health, but mental health too, so men should do more to look after their relationships and mental wellbeing.
"Also, we know men don't always get help when things might be wrong. Get advice as soon as you think there might be a problem; you're not wasting the health professional's time. If you're offered a free NHS Health Check this year, take it."
Dr Mike Knapton, British Heart Foundation associate medical director: "Quitting smoking is the single best thing you can do to protect your heart. Research shows that a smoker who gives up on January 1 will see their risk of coronary heart disease cut in half by the end of the year.
"There are still around 10 million smokers across the country and smoking remains the number one cause of premature avoidable death in the UK. And, making sure that you do regular exercise is a great way to maintain a healthy heart and put years on your life. It's never too late to start."
Reach a healthy weight
Sioned Quirke, dietician and professional manager of adult weight management service, Aneurin Bevan University Health Board:
"Become a healthy weight. Obesity is nearly at epidemic level in the UK, and we need to do something about it. I want to see people taking responsibility over their own health and future health by becoming a healthy weight - it's one of the only modifiable things we can do to actively become more healthy.
"The most common mistakes I see are people trying to lose weight too fast. Set yourself a realistic goal of 1-2lbs a week and no 'diets'; you need to make a lifestyle change in order to lose weight and, more importantly, maintain that weight loss. Portion control is key, so half fill your plate with veg/salad and divide the other half between protein [meat, fish, beans...] and carbohydrates [rice, pasta, potatoes or bread]."
Know your rights
John Newlands, Macmillan Cancer Support nurse: "Get to know your rights as a patient. Going to hospital can be intimidating, but I hear from too many cancer patients that they didn't know exactly what was going to happen to them in hospital, or that hospital staff left them feeling confused or vulnerable. This shouldn't happen.
"Everyone has the right to be fully informed about their care and treated with respect. Next year, get to know the rights you're entitled to by reading Macmillan's tips, and then make sure you ask questions, speak up and get the care you deserve."