"I am a little confused, stories that amount to self confessions are a bore, only does a message resonate when the voice is of a universal nature."
Without venturing to far into areas that I am not well versed in, I would say that stories of self confession are a bore for you
(underlined for emphasis) because you give little meaning to them. I, on the other hand, give a great deal of meaning to stories of self confession. For example, I find that these type of stories show how others interpret life and their experiences in life. These stories help me reconcile the suffering I experience. (When I say "I", I don't mean myself, because I don't feel that way necessarily)
"Our experiences of being human are universal,"
In a very general sense, yes. However, I will use Sartre's example of the boy who had to make a decisions between going to war to support his cause or staying home with his mother, who would be absolutely alone without him. Sartre would say that no one can make this decision for him, let alone any moral philosophy. This boy must weigh the ramifications of his potential actions against what he knows about his cause and his mother, then decide for himself.
This is where stories come in, this boy can use the stories of others to help him decide, but he must decide himself nonetheless. No one will have his exact situation, feelings, and such, and no one will ever have to make the decisions that he is making. Do others suffer in the way he does, yes. But again, in a very general sense.
It only becomes relational when the person makes it relational.