Try thinking on longer timescales. Even if you're resigned to the fact things aren't going to get better in your lifetime, it might bring you some comfort to know that possibilities remain for a brighter future. Even if all of civilization collapses and humanity is reduced to a few survivors struggling in a few isolated regions, that can grow into something beautiful. Acknowledging that also means acknowledging that what you do in the present might contribute to the survival of a group of people, a way of life, a wealth of knowledge, or anything that is important to you.