Kevin DeYoung, in his book Just Do Something, has this to say as it relates to our anxiety and God's will:
Our fascination with the will of God often betrays our lack of trust in God's promises and provisions. (pg. 47 emphasis added)
... anxiety, after all, is simply living out the future before it gets here. (pg. 47 emphasis added)
... we should be humble in looking to the future because we don't control it; God does. And we should be hopeful in looking to the future because God controls it, not us. (pg. 47-48 emphasis added).
Quotes taken from Just Do Something by Kevin DeYoung ©2009 by Moody Publishers.
Get your copy here.