I hope you ask other professionals and your professors for their opinions too. You are putting way too much stock in what your therapist is telling you. Balance it w/other opinions.

Look at it this way---your current T NEEDS to believe that your "problems are too deep". Otherwise, what does it say about her as a therapist? It is easier for her to see you as a hopeless case than to examine her own shortcomings.

Follow your dreams.