When I was a little boy, one of my favorite toys was a rock tumbler polishing kit.
The kit included a mechanized tumbling drum, some starter rocks and a couple of pouches of different polishing grits. It looked just like this one:
You took the rough and nasty looking rocks, added some water and then the polishing grit (most coarse first) and then let the rocks tumble for over 24 hours in a rotating drum that was louder than a diesel semi using the jake brake. You’d pull out the rocks, clean off the grit and then repeat the process with an finer grit. This process would happen 4 or 5 times and at the end you’d have the is incredibly beautiful polished rock.
I believe that learning to focus on your dreams, striving to leave average behind, is a process a whole lot like rock tumbling.