Everydayhealth.com offers these suggestions:

Make specific goals. Don’t just say, “I want to lose weight.” Better: “I want to lose 20 pounds in a year.”

Be realistic. Never expect to lose 20 pounds in two weeks or even three. Set goals that are realistic with the effort and commitment that you can give to them.

Set reminders. Post sticky notes where you will see them, reminding yourself of the benefits of exercise and sticking to your goals.

Schedule your workout. Put time for exercising on your calendar.

Put it in writing. Keep a journal with your goals for the week along with your results.

Consider the obstacles. Think about what might get in the way of going for a brisk walk or biking at least three times a week and come up with a plan.

Weather getting you down? Find a fitness center with child care or create a home exercise routine that you can do when the kids are napping or at school.

Get a partner. Finding a partner who can keep you accountable can be a good strategy.

Talk to a trainer. It’s important that your exercise routine be made of activities you like. The more you like them, the more motivated you’ll be to do them.