Many of our earliest survival skills depended on elaborate hand-eye coordination. To this day, a large portion of our brain is devoted to this relationship. When we work with our hands and build something, we learn how to sequence our actions and how to organize our thoughts. In taking anything apart in order to fix it, we learn problem-solving skills that have wider applications. Even if it is only as a side activity, you should find a way to work with your hands, or to learn more about the inner workings of the machines and pieces of technology around you.
Many Masters in history intuited this connection.
Thomas Jefferson, who himself was an avid tinkerer and inventor, believed that craftspeople made better citizens because they understood how things functioned and had practical common sense—all of which would serve them well in handling civic needs. Albert Einstein was an avid violinist. He believed that working with his hands in this way and playing music helped his thinking process as well.
Mastery by Robert Greene