You cannot control what others think, feel, or how they act. You like your choice of boyfriend and job and what your friend thinks should be so much nattering if you have thought it through and found what you believe is right for you.

If I were to say you should go to school X you would be puzzled, I do not know you or school X or the school you have decided on or anything.

Your friend is somewhat similar; she can have her opinion of where she would like you to go but she is not you! Next time she gives her opinion on something in your life, thank her for her opinion but tell her you are not interested in discussing it with her, you have decided what you want for your life and are quite happy with your decision.