What are three predictors of marital satisfaction and a long-lasting marriage?

One of the best predictors of marital satisfaction and a long-lasting marriage is the partners' chronological maturity, or age. Generally speaking, the younger the bride and groom, the less likely they are to have a lifelong marriage. Forging an intimate relationship relies on a secure sense of identity, which many emerging adults are still developing. Marital success is also predicted by the degree of similarity between the members of the couple. Similarity in socioeconomic status, education, religion, and age all contribute to predicting a happy marriage. In addition, spouses reciprocally influence each other and tend, over a lifetime of marriage, to become more similar to each other in terms of personality and markers of aging. They also become more similar in their general well-being, as measured by rates of depression, physical activity, and health, including chronic diseases such as high blood pressure.