Day challenged the conventional commencement wisdom of 'do what makes you happy.' Drawing on his own experience of years of rejection in New York — being told he was too short, too strange, that he'd 'never work in comedy' — he argued that everything he's truly proud of has been hard work, and he's not always happy. The real measure isn't happiness but greatness: pushing through discomfort, accepting failure as a necessary part of the process, and trusting that the struggle itself gives success its meaning.