Getting married and doing well in your work are two different things and can be achieved without the other. Twenties is actually very young in this new day and age, it could be quite normal during your parents generation. Now it is quite a norm and you probably hear of many who are getting married more likely in the late 30s or 40s. I know as many who are not married by the time they reach 40s and that is nothing wrong. It is your life, you drive it and dont be presurred by external labels and expectations. When you meet the right one you will know when it is time for the both of you.