Ask, receive, I'm scared to take it

I'm sitting here blogging for work, checking project lists and making sure all of my ducks are in a row.  I randomly had a question pop in my head about asking for things to happen, receiving it and then being scared to take it.  Why do we ask God for certain situations to happen in our lives and when he gives it to us, we become scared of it?  Now, I KNOW I'm not the only one that has had this question or it happening to you personally.  You know how you can ask "God, please grant me a new job opportunity or please grant me with financial stability" and when he prepares it right in front of our eyes, we question it?! What causes us to feel scared or second guess what he gives us?  Is it faith? I've had it happen to me before and I couldn't believe how quickly he provided an answer to my request. I mean, I was really blown away. I even questioned it. Just out of curiosity, what do you all think about it?

BROWN SKIN. BIG DREAMS.