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Goals and Marital Satisfaction: Perceived Support for Personal Goals and Collective Efficacy for Collective Goals is book written by James E. Maddux, Department of Psychology, George Mason University. In it he says:

This study examined the role of personal and shared goals in marital satisfaction. Two constructs were investigated. Perceived support for personal goals was defined as the degree to which a spouse views the marital relationship as facilitating or hindering achievement of his or her personal goals. Collective efficacy for collective goals was defined as the degree to which a spouse believes that the couple is capable of accomplishing its shared goals. It was hypothesized that each variable would make a unique contribution to the prediction of marital satisfaction. Results of a survey of 117 married couples supported this hypothesis.

Couples who support each other’s individual goals have a much stronger bond and better relationship than couples who don’t.

You can learn more about it here.