"And the peace of God, which transcends all understanding will guard your hearts & your minds in Christ Jesus."
Philippians 4:7 (NIV)
We've heard it said that "God won't give us anything that we can't handle." And He doesn't, as long as the "we" includes HIM. When we allow our minds to be filled with fear & start to think of all the "what ifs", we only need to call on Jesus & He fills us with His peace that truly transcends all understanding. That's just one of God's countless promises that He will not break.
Now, i'm not saying that i don't become concerned with life situations. But i don't worry & i don't fear. I pray. Give it a try! Open your heart & your mind & let the peace that passes ALL understanding guard YOUR heart & YOUR mind.
(And on a side note....if you're in a position where you are keeping something to yourself, because you don't want to worry someone you love, you're also depriving yourself their prayers. The power of prayer is immeasurable.)