Something that often – but not always! – helps me in this state is to find someone else to help instead. Seeing that I can make a difference for someone else can help renew my faith in the possibility of change and my ability to help enact it.

Is there something you can do that is focused on others? You mentioned a steady paycheck - if you can afford it, would it feel good to go be a mutual aid fairy and sprinkle some financial magic on your comrades? That could be a fun thing to look forward to every couple of weeks – throw a little payday party and bring out your inner Oprah: "You get a meal! And YOU get a meal! AND YOU get a meal!!!"

Sometimes just finding posts here or on reddit made by people going through similar things and commenting to tell them I don't have a solution but they're not alone helps me, too; if they're not alone, then neither am I.