Plato's theory of healthy personality

Do not have your concert first and tune your instruments afterward.
Yesterday, I went to ICEF to attend the only class I had – the class of English. I came there and when I entered the auditorium, I saw a friend of mine by the name of Irina. She looked exhausted. I asked her why she was so tired, and she told me that she had done some psychological trainings as well as fitness exercises that morning. She said she had to keep herself in a proper moral and physical condition to stand the pace of life. “Quite a reasonable purpose, especially nowadays,� I thought.
Then, after having read another pile of articles on the Intellectual History of Europe, I realized that, in fact, many people were concerned about the idea of being healthy, singularly in terms of morality, at all times. It penetrated the minds of such outstanding people as Plato. He even managed to evolve this notion into a whole theory of healthy personality, which is so significant for philosophy, because it covers the topic almost completely and has nearly unshakeable arguments to prove its theses. So, let’s take a precise look at it.
According to Plato, healthy personality deals with the soul and with its structure

The seventh key is joy and laughter. To develop ourselves surely means being spiritually disciplined, but it doesn’t mean we have to live a serious life!  I find people with the sense of humor have more joy. We have to remember that it is natural to express joy, laughter, enthusiasm and happiness.

The final group consists of our most common, everyday thoughts. Psychologists have subdivided consciousness into three separate, but interdependent levels of thought: the conscious, the subconscious and the unconscious. The conscious mind is the one we use to rationalize, to make logical inductions, to count the change at the supermarket or to read. The subconscious mind controls all the involuntary process of the body (i.e. the regulation of sleep, respiration, digestion, blood circulation and so on). The unconscious mind is a ‘warehouse’ of all our past experiences, all our thoughts and feelings, appeared from the past up to the present. It is also in charge of our habits. Therefore, in order to be in control of ourselves, to be of a healthy personality, we have to be in charge of the way we think both consciously and subconsciously.

Each of the blind men bowed and moved back slowly to find the road’s edge. The princess and the teacher resumed their slow warm ride, always peaceful. The only sounds were the sounds of their travel. The gentle breath, whispering past, the leaves, rustling in the trees… The teacher felt humbled. He gently ran his hand along the massive back of the animal. He smiled and said, “These three have answered you. You see, we are all just like them, and truth is like the elephant. It is often that the blind teach the blind.”

The actions to take to be in good physical shape are evident. They include keeping fit, eating healthy food, drinking clean fresh water, minding hygiene, etc. In a word, being physically healthy implies following what is called ‘a healthy way of living’. That is quite simple, so I would like to move to a more complex point of morally healthy personality. I presume it to consist of principles of thought and spirit.