These are the basic soul levels and how each soul level reacts with stress. I borrowed this very important information from the book Tao to Earth, by José Stevens, Ph.D. Hopefully he won’t be terribly offended.
THE INFANT SOUL
INFANT SOULS choose lessons of physical survival. They live in simple situations that include intense experiences - famine, plagues, floods, wars, oppression, etc. They don't know the difference between right and wrong, though they can be taught to be decent human beings. They don't usually seek higher education and often don't seek employment, as such. Infant souls don't question authority and willingly adopt the religion of their parents as is.
INFANT SOULS react to stress by trying to keep their stress level low, to adjust with their body and to learn the basics of survival. They stress easily and don’t do well in evolved and spiritually pressuring societies. They gather around the more isolated areas of the globe, near the equator, where the change of the climate is the least and survival in that state is secured. Infant soul survives the overcoming stress by either pulling away of fighting it fiercely. They behave like a cornered animal, which either paralyzes or panics. They remove stress by either wholly removing away from what creates the stress or by controlling themselves completely.
THE BABY/CHILD SOUL
BABY SOULS display less fear than infant souls and are more sophisticated. But they tend to over apply rules. Black is black as far as they're concerned. Their strong early beliefs remain fixed in their minds, regardless of lack of their wisdom or tolerance. Baby souls love to perform big fish in their little puddles...but hate being opposed. Because of this they may spend much time in litigation. Baby souls don't spend time navel-gazing into their own lives. They're often "good students" that learn "proper subjects," and are attracted to fundamentalist religions.
BABY SOULS also prefer a stress free environment, and they focus on small communities, where a traditional lifestyle is upheld. When reaching the final stages of their baby/child souls, they start experimenting with higher levels of stress. They might pick professions in the law enforcement and in law order to heighten their senses of stress. Although if they stress too much, they will behave as infant souls would, they either express tense irrationality or aggression. Baby souls do not seek the stress’s origin from inside. They reach to stress with physical symptoms such that require surgery, medication to heal. They try to prevent stress by add rules and regulations to their environment. Structures lessen their sense of restlessness. Baby souls feel uncomfortable in the presence of homosexuals, or if they are around a different race. They try creating laws to prevent them from accessing same society and living like they do.
THE YOUNG SOUL
YOUNG SOULS are the "Donald Trumps" of the world...the movers and shakers. They usually set the bar too high for themselves. Achievement is paramount. They chase after what they believe will bring success without ever stopping to think why - because they're so limited in their perception. They fear, death and must have all the toys, experiences, fame and money they can possibly accumulate before they die. They are designers of civilization. Young souls usually seek higher education and graduate-level degrees. Their views of orthodoxy are at one end of the spectrum or the other. Monks and nuns are at one end and a belief in total sexual freedom, the other. They have difficulty with insight into other people's behaviour.
YOUNG SOULS use stress as a support of their ambition to get what they want. They are known for their extremely active life, which includes a lot of outside stress. They play big time games in national and international politics, Ivy League universities, professional athletes, corporate “warfare” and in the Hollywood entertainment business. Because of all the competition and ruthless pressure that takes place in these, the young souls often take outside relief to their stress. The misuse of alcohol and drugs are common consequences of that lifestyle. Only in reaching the last stages of this young soul level they realize the stress is coming from inside of them and from their own choices. Young souls prefer quick solutions to ease their situation. That usually leads to even worse situations. Because USA is the country of young souls, there is a lot of association that says stress is useful for the progress. Because of that Old Souls fall in to that trap, put more of that later.
THE MATURE SOUL
MATURE SOULS challenge the young soul's desire to "have it all." It is a hard cycle that demands seeking answers to life's tough questions. They are attracted to gentler faiths, such as Quaker, Unitarian, or Buddhist. Mature souls are not as open to the occult as old souls. They look for and question the motivation for all of life's actions. They often continue with inappropriate relationships -perhaps believing that through self-sacrifice or tough lessons they will ultimately prevail. Often they can't shake their sense of duty. Mature souls suffer from stress related illness that sometimes results in schizophrenia, psychosis and a higher suicide rate than other souls. [Cayce emphasized the role that `stress' plays in not only physical illnesses but also mental illnesses; he believed it was `stress' that wrecked havoc on the brain chemistry/balance]. But they're smart enough to seek professional help without urging. Mature souls often make huge contributions to knowledge - particularly philosophical and scientific. But altogether they don't necessarily have the drive for fame, many still achieve it. They're emotionally high maintenance.
MATURE SOULS normally accept stress as necessary part of their lives, because it gives them the possibility of loads of emptying, varying and highly emotional experiences. Stress eases the limits, edges of their experiences, for that the Mature souls usually pick it to bring excitement to their life. It’s true that souls that have just come to Maturity are very good at creating stressful situations. Soup operas are the perfect example of the dramatics a Mature soul goes through. Depending on how difficult the soul age is some mature souls go back to less stressing environment, but soon return to the cities where there is much action. To lessen stress mature souls easily get into psychotherapy and start read philosophy to clear things up. They start observing their inner world and search the reasons for the stress, sometimes this can go over and they will star blaming themselves for everything. Now and again the pressure gets so high that the persona breaks under it and medical hospitalisation is needed for sometime.
THE OLD SOUL
OLD SOULS live and let live. They seek the route of least resistance...they're individualistic and usually easy going. They have an inner knowing of the waste of time in pursuing fame and fortune and therefore create the appearance of being "laid back." Old souls are highly competent - even in roles they don't particularly like. They tend to choose work that is pleasant and undemanding, leaving them free to pursue their desired goals easily...unless the job adds to the spiritual search. They may or may not seek higher education...but definitely will seek it if they sense it's needed for their chosen path. Old souls create confidence in animals. And their choice of medical care tends to be alternative and holistic. Old souls are here to teach others their spiritual understandings. Their philosophies and writings are simple and easy to read. Old soul’s religion is far reaching and has no label. A grove of trees is a sacred place to them. They seldom cling to dogma and prefer personal spiritual practices. However, old souls are wise enough to be discreet in their religious practices and know how to pass in public undetected. They focus on searching for the spiritual truth and have a finer sense of knowing what is true than any other souls level. Old souls all over the world share the experience of emptiness and a longing for that feeling of home.
When the inner pressure to fulfil their Karma and increase their spirituality grow, grows, OLD SOULS start actively remove the outer reasons for stress. They are torn between need to create a stable and calm environment and the need to go through important Karma before the end of the cycle. To fulfil one’s Karma; usually a visible presence in the planets affairs is needed. That is why it’s very common that Old souls switch from a calm life to a hectic one, between lives. Although, this can also be done during one single life. Because all the other busy and hectic lives the Old souls have spent they face problems. First of all they carry with them strong images and memories of stress. Second the Young soul societies they’re living in enforce the image that they still need to be busy and hectic. Third Old Souls are starting to get tired of all the disturbance and feel themselves to be lazy in the world of achievements. All this creates a grand stage for low self-esteem and it’s Karma. Old souls are starting to understand stress is inevitable, because they feel that as lazy they are inadequate. That measures their self-esteem to profitability. The truth is that Old souls don’t need to accept this illusion as part of their lifestyle anymore. Typical old souls doesn’t look for more than a way to retire, he can feel this even in his/hers youth. So, Old souls create stress to compensate the fact that they are old souls in this society. They believe stress will initiate a fire under them, which will make them ambitious and affective like everyone else in the society. Because there are social pressure of success and owning a big apartment and few cars… all that is less than that creates the emotion of failure. The ultimate desire to look inside and feel peace becomes victorious even with self-inflected stress.