Unconscious memory

There are some memories we treasure which are not worthy to memorize. Those memories has neither any cause or effect, nor any good or bad influence but still we recollect them incautiously again and again and after sometime they become a part of our reminiscence. When my friend told me about such transcendental nature of human memory, I realized I have scored one. I feel its foolish to share such memories because of its over simplicity and dullness.