Do I believe it...

So on my blog I have my life verse, Jeremiah 29:11 a verse where as I read it, God promises to take care of me according to his perfect will and plan for my life. I think so strongly of this verse it's even tattooed on my foot, a place where I see it each and every day..... but some days I wonder why is it so hard for me to take it to heart and live it out? Why do I struggle with such worry and doubt....., why can't I believe what God promises me in this special verse of mine. Today we had a small setback in our journey to buy our first home and it frustrated me, it upset me and it made me angry with myself for being upset and frustrated. I have never been able to be one of those people who can just smile through and say "God knows", " God's will is being done".... I know it in my heart of hearts, but this human doubt and fear is a constant companion and I wish it wasn't.... At what point in our Christian walk do we begin to act on what we say we believe and really give it all over and trust our ALL with Jesus