letting go...hanging on...

I can't believe my baby boy is going to Kindergarten in less than 2 days. I feel like my heart is getting ripped out of my chest - I'm just so worried about him. He is the sweetest, most sensitive boy with an absolute heart of gold. While he is an amazingly bright boy, reading fluently and so inquisitive, he is so soft-hearted and gets his feelings hurt easily. He doesn't play as rough as some do and takes things so personally. I wish I could go with him and protect him from anything hurtful...I just want him to love school, make friends, and never get his heart broken...is that too much to ask? My brain keeps going back and forth...letting go and hanging on...I guess that is at the heart of being a parent - knowing when to let go and when to hang on. God - I'm trusting you to protect my baby boy when I have to begin the letting go part...