Why is hard improve ourselves. Everyone know how hard is to start a new things. A new Job, a relationship, move to a new city. In fact, there is a science explanation for this. A simple explication in fact. Our brain was designed to understand stuffs around us, and like everything in this world it's demanded energy. There is no problem in this because our brain is connected in our body, and we have this capacity: transform meal in energy. Perfect. But, after we understand the base for us living, our body must respect another "physic rules". How less energy we spend, better for us. So, if you want more than sufficient, you need to doing more than basic. It is a simple idea, hard to practice. Notice how is rare we find a high level sports or a genius in math ou linguistics. Is hard because they would be more stronger than yours instincts. They broke a law that to say: safe energy. If you want to conquer complicated things, you need to break your sistem too