Well i cant say anythings ever made me feel confident in myself, because i've always had high self esteem. However from my personal interpretation of the word "spiritual" (no this isnt pertaining to religion...at least...not what i would call "religion") All i can say is that one night i was walking across a bridge, and within the rapids of the river below i saw the reflection of the moon, moving perfectly with the river, yet, completely still in the night sky. Not something i'll forget any time soon.