Is this worth it...?

Hi, First off, I would like to say I am very sorry about depressing title of this post. I am about to explain why.

My name is Jinah and I am from seoul, south korea. I came here to U.S. as a foreign exchange student in Small town in Texas. I loved my host family and they were also nice to me (at first..). Soon, they offered me to stay with them if I wanted to goto college after completing high school here in U.S. I agreed and went back to South Korea.

Soon, I realized that the school i was attending at small town was not able to accept me as an international student( F-1 ). therefore, I had to take GED and started University as a biology major. I struggled quite a bit since then. My host mom suffered from depression. She often took out anger on me which I was fine with. Soon, she accused me of cheating with her husband and told me that she will send me back to Korea... My host dad was also aware of this situation but he could not do anything for me or her. He treated me as if I was his own daughter. (My host mom is not able to have children)I think I cried almost everyday for past 3 years. Only hope and dream I had was to graduate with biology degree, get into dental school and attend dental school to start my new life. In my Junior year, I started applying to dental school and got into Texas dental schools. However, my parents told me that they could not afford the tuition. (This was due to my dad's business.) Also, i didn't tell my parents about the situation with host mom neither.

Since then, I have been wondering what is happening. All the hard works I have put into studying seemed to disappear across the sky. I felt like God was telling me this is not a place to have a fresh start. However, I still tried and finally decided to go for second bachelor in nursing after I graduated with Biology degree.

Now, I am currently 20 and in my first semester of nursing school without host family ( I moved away). However, I was looking up things online and I feel like there is no light at the end of my tunnel. There is no guarantee that i will be able to receive Work visa/green card. I feel like I should just quit everything and go back to korea. I feel like God is telling me that.

Thank you for reading this. I am sure there are a lot of people who go through more struggles than me. However, I just needed a place to vent and share my story..... Thank you.....

Please feel free to ask me any questions or suggestions.

P.S. i have been just seeking for calm and steady life... that is part of reason why I chose nursing (because nurses can find a job anywhere and it is a pretty stable job).