The key to making those extra years enjoyable and productive is finding healthful activities you can stick with.

Today you can reasonably expect to live into your ninth decade, and you want to get there in the best shape you can. If you smoked, you’ve probably stopped, and you know that eating well and exercising regularly will help extend your productive years. But it may be a challenge to stick with a diet or exercise regimen you don’t enjoy.

“No matter how good an activity may be for you, you probably won’t sustain it if you hate doing it,” Dr. JoAnn Manson says. Dr. Manson is chief of the Division of Preventive Medicine at Brigham and Women’s Hospital, professor at Harvard Medical School, and the lead investigator on several studies on women’s health. She offers seven easy steps to better health.