There will be times when the struggle seems impossible. Alone, unsure, dwarfed by the scale of the enemy. Freedom is a pure idea. It occurs spontaneously and without instruction. Random acts of insurrection are occurring constantly. There are whole armies, battalions that have no idea that they've already enlisted in the cause. And even the smallest act of insurrection pushes our lines forward. Tyranny requires constant effort. It breaks, it leaks. Authority is brittle. Oppression is the mask of fear.
The Foundation book series doesn't really start into psychic stuff until the second book, Foundation and Empire, with the Mule. Big turning point of the overall plot because of him. I wouldn't classify the Second Foundation as psychics as much as having the ability to predict patterns mathematically and socially influence populations. The fourth book gets into some other psychic influencers.
I'm okay with the TV show parts I've seen, but it is vastly different in its approach (and so more psychic type things going on). I knew a visual version would have to take a lot of liberties as the books just don't translate well in the way they're written.