person A: I felt really elated to be getting work done. It's hard sometimes and  I pulled through. The happiness is real too!
person B: Which work are you talking about. it is always a good feeling to get things done. There a way your brain reward you with good feeling 
person A: It was just some stuff for a new job. Do you feel happy to complete stuff?
person B: Oh yes_comma_ i do most times. Who does not