I remember watching a video about learning a skill in 20 hours. The topic boils down to 4 points that seems fairly straight forward. I can't do it good justice

I remember watching a video about learning a skill in 20 hours. The topic boils down to 4 points that seems fairly straight forward. I can't do it good justice myself so here is a link to those 4 points: https://sourcesofinsight.com/learn-anything-20-hours/ https://sourcesofinsight.com/learn-anything-20-hours/ And here is the video itself: https://www.youtube.com/watch?v=5MgBikgcWnY https://www.youtube.com/watch?v=5MgBikgcWnY