Smoking can aggravate heartburn, so it's a good idea to consider quitting. Talk to your doctor for advice, or visit www.quit.org.au.
Try to lose excess weight. Being overweight puts extra pressure on your stomach. Talk to your doctor for diet and exercise advice that's right for you.
Avoid clothing with tight waistbands, especially after meals.
Some medications may aggravate heartburn - for example, some anti-inflammatory medications used to treat arthritis. Ask your doctor about any medications you are taking.
Raise the head of your bed by 20 cm or use a wedge pillow to keep your head higher than your stomach.