Just for context, I am currently at a university 400 miles away from my family's house.

Last year, I wanted to do door to door sales (sophomore year of college) to get some money and also give me a chance to hone my selling skills. My parents did not allow me to do this because they did not think I was going to sell enough to survive. Fast forward to this year: I found a spot at better company for door to door. Additionally, my best friend from high school is currently on his second year after the first, in which he was the top rookie in the company. I wanted to try it out, so I flew to a preseason selling trip with him and did fairly well. I did that to see if I like the profession and I am cut out for it. After this trip, I was dead set on doing it this summer, specially considering that I did not get an internship for my major. I brought up the fact that I will do it this summer to my parents and they shot it down completely. There were many reasons why they did that: #1 was the fact that they would not be able to see me during the summer (and not winter break either since I have a Co- op right after in a different state). #2 Is that they don't think I would be able to make ends meet. They suggested that I stay back home and find a job there, but I really don't want to do that due to such a great opportunity waiting for me in selling. When I called them last night and emphasized the fact that it's commission- based, they began to scold and berate me, without any intent on hearing my thoughts and feelings. In the midst of them treating me like a child, I said "Mom, Dad, I love you, but I am going to sell this summer, please respect my decision." I immediately hung up the phone. Fast forward to this morning: my sister calls me and tells me that my parents were a mess after our call and starts crying, begging me to not do it. This has been paining me, because I wanted to do door to door selling for a long time, but my parents have never even considered allowing me to do that. I will also miss my family, but this is the only time I can take this chance, as my next coming years are booked with work. All of my young adult life, my parents have treated me like a child when it comes to matters like this. I am tired of being broke and want to make enough money to help my parents pay for my college education, and I see this as an opportunity to do so. On top of everything, I want to be independent.

What are your thoughts on this situation?