Whether it's because you can't afford to give the gifts that society says mark you as a good person, or because you're missing someone who used to be at your celebrations, or even just because it's cold and dark, depression can hit particularly hard during the holidays. One of the biggest problems with depression is trying to explain it to people who've only ever experienced the transitory kind that everyone faces at some point in their lives - the kind that hits after a breakup or a loss. They tend to think that depression means you're sad and just need a good cheering up. If you're suffering this holiday season, rather than suffer through another round of suggestions that you "shake it off," consider handing your well-intentioned friends a Vita and copies of Danganronpa:Trigger Happy Havoc and Danganronpa: Goodbye Despair and let Monokuma explain how depression really feels.
I'm as surprised as you are that a game starring a homicidal mechanical bear would be a good instructor on the nuances of mental health, and I rather doubt it's what the developers had in mind, but Danganronpa does a surprisingly elegant job of conveying what it can be like to live with depression. In case you're not familiar with the games, they involve a group of exceptional students who are kidnapped, have their memories erased, and are forced to kill each other if they ever want to return home. Admittedly, it's a situation that just about anyone would find depressing - murder someone or never see your loved ones ever again - but the most important part is the villain of the games, known as the Ultimate Despair. Every one of the students is the Ultimate Something-or-other - baseball player, programmer, swimmer, traditional dancer - but the villain's speciality is making people feel despair on such a deep level that they lose all hope. In that state, they become part of the Ultimate Despair's terrorist network because, really, why not? When you don't see the point in anything, does it really matter if you destroy entire cities or kill yourself? Nothing's ever going to get better anyway. It's an extreme depiction that serves the over-the-top nature of the game, but it's a pretty apt description of what it's like to live with depression.