We have to understand there are two parts of our mind, there's the conscious and the subconscious. It's the subconscious that controls our behavior. It's the conscious mind where the intellect is resident. So the conscious mind is understanding information, but it's not internalizing it.
Happiness and peace of mind are a matter of consciousness. We must create the harmony we desire. As we raise our level of consciousness we become more in tune with the true nature of our being. This type of awareness is not an accident; it comes from study and an understanding that we are truly creative.