Contact with the unconscious is the condition of having a good relationship to other people.
For instance, if a person doesn’t know his or her shadow, then the relationship to other people is very difficult and easily disturbed.
But if I know, this is my shadow, then I am more tolerant towards other people.
I can also more easily discern between what is my shadow and theirs: what was my fault and what was his or her fault.
People who are in relation with the Self attract other people. It’s a precondition for relationships.
But, of course, in every life there are perhaps phases- weeks or days-when one needs to be alone in order to introvert.
But that’s quite natural.
The more sincerely you do this introversion, the more you are able to relate to other people afterwards. -Aniela Jaffé (1903-1991), Psychological Perspectives: A Quarterly Journal of Jungian Thought, 261,104-116