['I received an excellent grade on an exam I studied really hard on', 'Congratulations! That is always a great feeling! A reward after such hard work. :)', "Thanks! Yeah, it's so satisfying and motivating. It makes me feel like I can accomplish anything as long as I put in the work!"]
This is very true and what all the great thinkers out there preach!
I received an excellent grade on an exam I studied really hard on