One thing that the movies miss from the books, which seems like it would be hard to pull off, is that NOBODY in Dune just has a normal conversation with each other. Literally everytime there is dialogue in the book, at least one of the characters is psycho-analyzing every word for some sort of ulterior motive, or some hidden meaning within a meaning or something, it's actually kind of annoying and I'm glad they didn't attempt to work that into the movie.
Did we read the same book, because my impression was that it was almost entirely written from the perspective of main characters that were looking for conspiracies everywhere. Paul and his mother in particular were literally constantly attempting to detect the machinations and plots of others in order to either manipulate their allegiances or literally predict the future. The were the center of an ulterior motive tornado for the Fremen. The mythos they exploited to grab power was built on the foundations of other Bene Gesserit missionaries before them, an army of ulterior motives. The entire theme of the book was secret manipulation of the masses in order to maintain and grow political power. You don't survive in the Dune Universe without psychoanalysis of every interact for ulterior motives.
Some people get a lot out of sitting very still and clearing their minds completely. Some people get more clarity in motion, while running, rowing, cycling, or walking. There is another way on meditation that involves almost the opposite of a clear mind, where you focus on experiencing and really noticing absolutely everything around you; every breath, birdsong, machine noise, footstep, squirrel chittering, and insect buzzing. Sometimes while focusing on a puzzle or game like Tetris, Sodoku, or a Rubik's cube, it feels meditative to me. I don't know if that's real meditation. But my point is that everyone's built differently, find what works for you and stop worrying about failing. If you're trying, you're not failing.