"All you need is love. Love is all you need.

Like the message of many other songs, movies, and popular media, this famous Beatles song reinforces a common myth—that love truly is all you need for a relationship to thrive. Pop songs glorify the process of falling in love and getting married—but they almost always give short shrift to what comes after.

Of course, all of us in loving relationships would like to “live happily ever after.” But can we? Is it realistic to expect love to last?

Luckily our relationship happiness is more under our control than we may think. In our new book, Happy Together, we outline research about healthy habits that lead to lasting love and how you can cultivate them for the benefit of your own relationship.

Here are four key habits to help build love that lasts."

Four Keys to Building a Love that Lasts — by Suzann Pileggi Pawelski, James Pawelski