I hope you are feeling better today. Sometimes, you are the type of person who wallows in your misery for weeks and weeks at a time and what you need to realize is that's not going to get you where you want to go. Further, when you are miserable you don't have the energy to put out the love I know you want to give others.
You know where you want to be in life and you know your job is not it. Fine, I get it, but what purpose does whining serve? I know you are afraid that you will never achieve your dreams and you resent the time you job takes away from achieving them but you have to stay positive. It will take time and perseverance and no, you may not succeed but you will be happier just for the effort. The end is not the destination, today is the destination.
Don't talk to me about soul sucking jobs. Your soul is inside you and does not depend on what others are or are not doing. Your soul is what you do, so do it to the best of your ability.
I know you say that you don't want to look for another job because a job is not what you want. You know what you want and it has nothing to do with working for other people. However, if you can't get past this darkness I think you need to consider a change. It doesn't have to be what you think it has to be. It doesn't have to relate to your degree, or be a corporate job. If you can't see past the pain of where you are, take the time to explore other possibilities.
Otherwise, face your life as it is now. Is there something you can do in your current job that will make it be more palatable? Is it only the fear of future making you hate it?
Consider this, What is the problem really?
Remember, no matter what happens I am here for you.