A good marriage can be built only by constant attention and effort. It evolves, changes, and develops slowly over a period of time. It does not develop overnight. The same applies to a good career. Balancing a marriage and a career is a something that needs to be learned.
A healthy relationship is about balancing the attention you offer your spouse and your career. You have to effectively divide your time and attention between your marriage and career if you want to succeed in both, and the amount of time you offer each is governed by the circumstances of your marriage as well as your marital and individual goals. It's not always an easy thing to do! Managing a successful career and a marriage and family is a skill that calls couples to make judgments that don't always work. In one corner you need to spend a large amount of time and effort in the workplace to advance and increase your salary and lifestyle, and in the other corner you need to spend the necessary time at home cultivating the relationship and fulfilling both yours and your partner's needs.
This is where problems begin. How much time do you devote to your career? How much time do you devote to the marriage? Sometimes it feels as though you are being pulled both ways. Many cannot manage both and sometimes they even lose both. Too much time either way comes at the expense of the other.