Who am I?

As a child I knew who I was, what I am, what I stand for, as I grew up the doubts kept crawling in, as a teen I didn't know who I wanted to become but I knew what I was, but now? I don't even know what I am, I look into the mirror each morning and I don't know who will be staring back at me at the end of the day , I don't know what I stand for, isn't growing up about knowing who you are? I reach new moral lows everyday, I used to be strong but now I have allowed myself to be so weak.