person A: Can't believe I failed that test.
person B: Oh no_comma_ I'm sorry to hear that. What kind of test was it?
person A: It was calculus_comma_ very hard stuff for me.
person B: Calculus seems like very hard stuff for anyone. Don't feel too down. Just use this as motivation to study more!
person A: It's quite hard but I plan to really tackle the next test and ace it.
person B: That's the spirit! Never quit and give up. Everyone fails sometimes.