My sister is insensitive. She doesn't understand me.I'm so sad. Help?

I quitted my job and now I'm unemployed. My elder sister called me criticizing my resignation. My sister lives in a backward countryside while now I live in a prosperous city. I graduated from college last year. I have a bachelor degree. My sister didn't receive any higher education. She thinks that I should not resign, even I want to resign, I should resign after I already find a new job. But I want to tell her is that the salary was low and the job was extremely boring and I couldn't learn anything from my former job because I worked almost like a machine. I think I'm young and I can't spend precious time on a job that I can hardly improve myself. Moreover, I felt very bad when I worked each day right before I resigned. The former company I worked at is going down. I tried to find another job before I quitted, but I failed. And the damn bad feeling with the former work was worsening and I felt I would freak out one day if I kept working in that company. I want a relief. Now I'm reading books to improve my ability so it will be easier for me to find a job, at least better than if I don't read those books. I want to tell my sister all this but she is impatient and doesn't bother to listen to me. She is anger at me and she is insensitive. She has never tried to wear my shoes. So my family don't understand me so I feel so sad. They don't understand me. No one understands me. I'm so sad. Help