Let me start this off by saying, your grades don't define you. They don't makeup who you are as a person. One bad grade does not dictate the rest of your semester or even year. Currently, it's the fourth week of school, and you know what that means. First tests of the semester. If the first one doesn't go as planned, that's okay. It is, honest. It just shows you what you were doing, it was not working. It's time to delete Netflix, Hulu, and Disney Plus (yes yes I know) off your laptop and your phones. It's grind time baby. And now you have to work double or maybe triple as hard as you were before. This is the point in the semester (yes it's early I know) where if you are struggling so far, you need to get help. If that's via a tutor or help sessions or whatever you need. Do it. This is the grind point in the semester. Work hard now, organizing notes and keeping track of them so when finals roll around; you don't have to pull 14-hour study sessions in the middle of the night. Getting organized early in the semester is your only chance at staying sane later in the semester. Especially if we go back to remote learning during finals week.
Okay, let's recap. Grades don't define you. I know someone needed to hear it just like I did. It is okay to get a bad grade, it's just a sign you have to start working harder. This is the point in the semester where it counts, put in as much effort as possible so you're not terribly stressed when finals come around.
Your grades do not define you. You will be okay. Everything will be okay, if not now, soon.