Because blockages are mostly invisible, you only experience them in snapshots. The more everyday a blockage is, the more obvious it is to you. Others you experience only sporadically: You are on a date and suddenly you can’t speak anymore. You have an interview suddenly the sweat is running. You are standing on a stage and the world collapses.
These little disgusting moments are worth gold because without them you would never have noticed the blind spot in the first place. You can confront them and do your own behavioral therapy: Improvisational theatre for flexibility. Toastmasters for speech anxiety. Better deodorant.
With enough confrontation, the fears and blockages go further and further into the background. Anything that stops you can be defeated by persisting long enough.