How to deal with unsupportive people?

Hi guys! I am currently an aspiring Hematologist, Immunologist, or Hematopathologist (still haven't decided). Meanwhile, here is a little bit about me: I LOVE medicine! I like helping people, and enjoy studying (I know, it sounds nerdy). I have a 3.96 GPA that I work earnestly hard for, but most of all I enjoyed the process. However, some people make me feel insecure about myself. I have family members who stay stuff like: "I can never see you as a Doctor," and always mention the... How to deal with unsupportive people?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums