Isaiah 7:11
Make thy petition deep. 
The amplified Bible: Isaiah 7:11 Ask for yourself a sign (a token or proof) of the Lord your God {one that will convince you that God has spoken and will keep His word}; ask it either
in the depth below or in the height above (let it be as deep as Sheol or as high as Heaven).
This sort of sounds like putting out a fleece or putting God to the test, but actually the Lord spoke these words to King Ahaz. I don't really believe in asking for a sign or putting out a fleece; However, I think really what the Lord was trying to convey to King Ahaz was that He, the Lord God, could and would give him the victory.
I do think that many times we don't
really believe that the Lord can work in our various circumstances and bring the best outcome for us. We really have no idea of His power or His potential to do much more than we can ever ask or even imagine. We kind of put Him in a box and, without meaning to, put limits on what He can do. The fact that we worry as much as we do is evidence that we really don't have enough faith and trust in our omnipotent Lord.
My devotional this morning started with the verse above, and then it had this poem
. Make thy petition deep, O heart of mine,
Thy God can do much more
Than thou canst ask;
Launch out on the Divine,
Draw from His love-filled store.
Trust Him with everything;
Begin today,
And find the joy that comes
When Jesus has His way!
It spoke to my heart, and reminded me that God is already at work in the situations that concern me. I just need to "make my petition deep" and trust Him for the outcome.