I'm taking 4 college courses over the summer and don't know how to mentally prepare.
What do you feel you should work on?
I'm just worried that I won't be able to keep up and get distracted easily
It's understandable that you are stressed about the amount of courses that you have. You should find out from an administrator if you can reduce the amount of classes that you have and explain that it is overwhelming. Taking on too much at once will lead to you feeling burnt out.
It's fine, I can handle the amount of classes. I just don't want to focus too hard right now.
What do you mean by focusing too hard?