Oh happy day! Researchers from the Northeastern University College of Computer and Information Sciences and from Harvard Medical School have been analyzing tweets to gauge when we're feeling our best and worst — and it turns out folks are happiest on Sunday and gloomiest on Thursday. I don't think it's fair to compare the carefree weekend to the workweek, so I want to know which day of the grind makes you most glad. Friday may seem like an easy winner, but it's one of my busiest days (and not my favorite) so I'm leaving it in. Tell me: What day do you enjoy the most and why?