We, students, must strive hard to gain knowledge, not for grades. For you shouldn't be worry about grades, instead care more about learnings.
Good grades might be success, but bad grades is not a failure. Grades just show your dedication, not your personality. Your work ethic, not your intelligence. These numbers don't even define who you are.
Still, there's a need of sustainability of high grades in order to step forward. Much better if you have the wisdom with you.
You may hate your self for failing to memorize all the elements in the periodic table, or having a faulty grammars on your essay. But did you know that this life isn't just inside the four walls of your campus?
Always remember, you're more than the worth of those grades possess. You're worth doesn't decrease in the absence of academic excellence. Everyone is intelligent in different ways.
As how darts on a board wishing to hit the bull eye's, I know no one ever desire for bad grades.
So if you got low grades —at least you tried. Better luck next time, I know you can do it again.
Because ten years later, a mere piece of paper will not display your achievement anymore, but rather the suit that you wear in the near future.
Academic grades will never dictate your future.