Well those blocks definitely serve a purpose and protect us. Maybe visualize just taking small chips out of it. I know it sound contrived but can be very powerful.

Years ago I got in the habit of screaming at my parents in the shower when I knew no one was around to hear. i was an adult. One time I was screaming at my mom and all of a sudden I looked down and saw all the black inky substance running out of me and down the drain. It wasn't real it was a visualization that just popped up. I didn't visualize on purpose but it worked. You tend to create the reality you visualize, that is why athletes do it so much. Of course it is not that easy but it is powerful.