How do i deal with my judgemental family?

I think my family is ashamed of me. There obessed with status and seem to think a persons job determins there worth. My brother is a fireman and my sister is training to be a nurse my parents are always bosting about them and there careers. But when it comes to me i think there ashamed to even talk about me. I work part time at macdonnalds, as well as working as a volunteer at a hostpital. None of theres occupations is worthy of respect accoroding to my parents. Also both my brother and sister are married which has made my parents really proud. Im not married which is another area of my life which they don't approve of. My parents think being married is also something to brag about. If i ever get married i want to do it for the right reasons not to impress them, but i feel pressured like ive got to conform. At my brothers wedding my mom tells me i need to sort my life out. Then she started comparing me to my bro and sis. She really hurt my feelings. How do i deal with this.