I just read this article and it made me think of how there's a parallel between people who are elderly living in nursing homes and being neglected, and depressive people. Both sections of the population need something to live for.
Depressives may need medication... but like elderly people who are put in homes and on meds and have nurses or whatever, depressives need things to look forward to. Like meeting friends ( something difficult when you've estranged them with your depression), or having a project, or being expected somewhere.
It's hard to remember to do these things, though, when you're depressed. Even when you get help, the focus isn't usually on extracurriculars and holistic living. Just like elderly people sent to a home, depressives are given a medical cure and maybe some emotional support. But there's little talk of what to do at home, what to change in your life to give yourself something to live for.
What do you do to keep going outside of therapy? For me, sometimes the only thing to do is commit to a project run by some outside person. Then, because they expect me to show up, I will.