How is my life? My birth date is 23 Sept 1978 ,5.15.

Your life is in harmony, actually. You just cannot find something interesting in life. Trust me, it happens on everyone. You may have two kids, and your marriage life is stable as you expect. You’d better to give more care to your family, sometimes a romantic dating or a surprise gift. All these will change your life, adding more joy to your marriage life.
About 3 year, you will get settled. Be patient and develop according your own pace.