See with your mind, not your eyes
When you focus your mind at the center, please appreciate that you are not looking with your eyes anymore. Whenwe see with our eyes, the world in front of us is a 3 dimensional world. We can measure the size or distance of everything we see. When you close your eyes, it's different. You come to another world. Your mental world is not a 3D world. Do you remember when visiting an art museum for the first time and admiring famous paintings? When we see some abstract art we don't really understand what it means. People say it's beautiful, it's magnificent or it's a masterpiece. Until we learn to not complicate it and just look it simply, we can't see its beauty. With attention to simpleness we can admire this art like the others. It's not just where we perceive with our eyes but where we also listen to our emotion. Beauty is emotional, not rational. Each person can interpret differently. It's another beauty of our world.
To meditate well with your center, please consider it as though you are in an art museum. Your center can be different to that of others. Some prefer to observe a precise location, some look at an area, some just keep a comfortable feeling around that location. What is important is your comfortable feeling inside.