Follow Your Dreams?

Do you ever like really think about what you want to do with your life, like what you want to do and where you want to be, and just get really upset because reaching your life goals are unrealistic?
I cry. It literally hurts when I think about the fact that I will likely never achieve my dreams because they're so unrealistic. So I set an achievable goal doing something else that I would still enjoy, but I also know that even if I get there, I still won't be doing what I truly want to do.
Me? Personally, I just want to sing. I want to perform. That's all I've ever wanted to do. That's pretty much the only thing I'm good at. I want to travel and sing for huge audiences all over the world...
But, that's never going to happen, so I started studying to be a choir teacher; so I can, at the very least, have the same impact on my students that my teachers had on me.
But even that seems unreachable right now. I dropped out of university after one year because of my mental health and the fact that I hated the school I was at. I keep telling myself that I'll go back to school once I get on my feet and get some stuff paid off, but I'm not able to pay off my debt any time soon and any money I get a chance to save ends up being used because of not making enough money to cover bills plus stuff I need to buy let alone saving anything or paying for school. Even if I did make enough to pay for school, I'm not going to be able to work full time and go to school online or at night forever. Most of my classes are not offered online or at night. So work overnight? No. I've seen my friends struggle with their overnight vs reality every day and I could not mentally handle that stress.
I can keep going but it just spirals down from there.
I kinda feel like I'm drifting further and further away from my dreams as the days go by. But then again, I'm losing weight without trying, which has also been a dream of mine for a long time so there is a little hope. ;)