Hi OP, our DD's and our GDD's and our Great GDD's are why we fight this fight. I sometimes despair at it all, at the misogyny, the online hatred, the eye rolls even on this website (not on FWR but other areas), the constant underlying fear (I am fearful of attack all the time, while walking, while running in the park, while out alone in the car - yes it is tragic as a middle aged woman but I now realise that attack and rape is not about youth and attraction, it is about power and hurt. So, thank you for starting this thread.
When I despair I find the following useful, I stand in my garden, or in my room overlooking the garden, or I stand under a tree in the park, and I look at the sky and I list all the beauty and wonder I know in my life right now. To-day I stopped while DS played in the park and I watched a perfect rainbow over the stunning autumnal trees and I was glad to be alive.
Sometimes, that is all we need to recharge. Also, when you are really low, I would advise taking a break from all the activism and staying off line for a week or so and recharge your batteries with some great books; great music or great art - whatever takes you out of the present.