"Changes" is the twentieth episode of the seventh season of the American medical drama series House.
The team takes on the case of a lottery winner, Cyrus Harry (Donal Logue), suffering from paralysis and multiple types of cancer, and they must figure out if it is his new millionaire lifestyle that is making him sick.
They wager a bet to see who can better change the ugly parts of their personalities; Chase begins hooking Foreman up to a blood pressure monitor during differentials to measure how much he is bothered by his teammates, especially House.
House actively begins trying to deduce why Thirteen's outlook on Cyrus and Jennifer's romance is so jaded.
House comments that after everything Thirteen has been through, her outlook is a defense mechanism because if she can convince herself that she would have been miserable either way, she does not have to hate the universe for handing her a losing ticket.