Faith?

So here I am desperatly crying out to God to somehow teach me how to obtain access to the Kingdom of God, to somehow appropriate all He has taught me. I want to heal the sick, prophecy over the hurting and raise the dead, but I have trouble having the faith I need just for the day to day stuff
My son is headed off to college and I am having a hard time with his traveling across country alone.
We recently went to Charlotte NC and attended a service at Morning Star where the ministry team had an incredibly accurate word about my sons future. He wasn't sure where to go to college and one lady told him ahead of time what he'd be doing without our ever saying a word.
Therefore, I should have complete confidence in God that He has all under control, He has a plan and a purpose for my sons life, and yet I am afraid to let him go.
Why is it so easy to have faith for a complete stranger, to reach for the moon with faith, but it becomes nearly impossible to trust God with those closest you?