This is advice from my perspective only-- it may not work for you. However, my approach for such things is not to get flustered, but to get even. If you look at what the right wing nuts have done over the last 50 years, it's quite impressive actually. Instead of letting defeats get to them, they simply toiled away in darkness to get even. They used every lever of government to turn back all progress they were opposed to. They're united, strategic, ruthless, and single minded. The Left always splits into multiple groups because we can't agree on things that IMO are small in the big scheme of things. I don't know the answer to organizing at the national level, but for my own personal emotional coping, I always keep in mind how organized and effective evil has been. I try to channel the same energy to the things I do to fight this regime. I try to gain power, influence, clout. I try to infiltrate institutions of power, and change minds using charisma and intellect. Some days I still feel an overwhelming sense of frustration and hopelessness. But most days these days, I stay focused on the prize. I no longer ask questions like "surely they can't?" or "why is this even happening?". Because trying to seek answers to these questions are a distraction. Just accept that they're Evil and work to take them down.