For others, resolving a portion of the life issues opens the door to resolve a portion of the skin symptoms. Then the next chapter of the emotional growth sets the stage for more skin improvement. Some skin problems vanish forever and that's that. For others, the war is lifelong, and the techniques let you win more of the battles more of the time. A thorough diagnostic workup, training in the techniques, and at least beginning results are usually a realistic expectation in that time frame.
Heredity sets the stage for some problems, such as psoriasis.
Some people are born with one or another organ system more or less durable, more or less reactive. Physical injury or deprivation may leave an organ system more vulnerable. Too little, too much, rapidly fluctuating, anxious, or inappropriate attention to an organ system may leave it more vulnerable. Some things in life are just bad luck or good luck. This is a question worth asking, although expect to reach a point of diminishing returns after a while.