Hello! I am so glad for you that you are getting an education! Try to live for today and not worry about the future. The fact that you are branching out, and have also have a job shows you are pushing yourself, and testing your limits.
I work as a social worker, successful career, and will be honest I do struggle with working at times. Stress can make me feel bad, but I do things to take care of myself like exercising at the gym, talking to my husband, scheduling some down time, taking vacations. It is manageable if you take it in small chunks, a day at a time.
So keep going sounds like you are doing great!