University is hard, but worth it. From past experience, I had a hard time and had PTSD from my first degree. I recommend talking or writing about the experiences that you went through. It is hard but worth it. Make an action plan for the steps needed before you go back, and during. If you need help, I would be willing to help. Or post ideas here for more input. You can do this!
Some positive affirmations can also help, repeat them often until you believe in yourself.