Describe your experiences going into depth with psychology. Are you frightened of what you found? Morbidly lustful? Permanently scarred, or perhaps more indifferent than you'd ever thought possible?
Self knowledge always brings wisdom, because by understanding ones self at deeper levels we are able to understand others at a deeper level, and all of humanity.
Psychological inquiry reveals misunderstandings and assumptions about the world that we all formed as children before we had our full adult faculties, so we all made many poor assumptions that later became so familiar they are invisible to us.
No risk of "scarring." That question is probably based, actually, in some assumption inherited by the 8 year old kid you once were.