You may have a New Year's resolution to get fit... but a lot of people throw in the towel after only a few workouts. Health expert Bob Green talked to Robin Meade about how to get motivated to Live Better Now.

Robin: I think a lot of us need a little bit of motivation to get started on an exercise routine and then to keep on our exercise routine. How can we keep motivated?

Bob: It comes from you. What do you want? You have to, daily, remind yourself what is it in life that you want. And tie that intimately to your behavior. The first thing is really understanding how important your well-being is.

Robin: Can a motivating factor be something that's more tangible other than the 'greater good' of me?

Bob: Everybody needs their reunion they want to look good for, a wedding they want to look good for, we need those. The truth is, I never worked with anyone that made long-term changes that didn't have that revelation of what's more important than my well-being?

Robin: What if your motivation is as simple as, you're just bored? You are exercising and just bored with your routine? You should be changing it up how many months?

Bob: Even if you're not bored with your routine, I like changing something every five or six months. If you're used to walking on a graded treadmill, use an elliptical. Switch it around, throw in some kickboxing or some other type of class you like. That does two things: it gets your body in better shape because you train more muscles and stems that boredom.

For more advice, check out Bob Greene's new book, "20 Years Younger."

And click HERE to see all the ways you can Live Better Now.