The thing about being on the trail is that it takes away your option to quit. It doesn't matter how hot or tired you are, or how much your body aches, the only way to the end is to keep putting one foot in front of the other. You can and should rest when you need to, but eventually, you have to walk. No matter how uncomfortable it is, it's the only way forward.
I've had this same sort of experience in my personal life, too. I've made difficult choices, and found that there comes a point when the choice to change your mind is no longer there. The only way out is straight through, no matter how much it hurts. Standing paralyzed hurts just as much (if not more), but doesn't get you anywhere. You have to keep moving forward.
I think that's where we are collectively right now; there are so many issues where we've reached the point of no return. It sucks, but we're in it, and we have to find our way through it. There is no turning back to the way things used to be. It will hurt no matter if we stand still or walk, but only one will get us anywhere. We don't have a choice but to accept the discomfort and start pushing forward.
We have to have the awkward + uncomfortable conversations. We have to be willing to speak up when our fellow human beings are being treated as if they matter less. We have to be willing to face the areas where WE have contributed to the mess, intentionally or not. It's not easy, and it's not comfortable, and it makes me sad and angry, but honestly, aren't we experiencing all those things anyway? We might as well get somewhere in the process. Start walking.