Someone once quoted to me, "Sometimes God will send you a Goliath to bring out the David in you." Let me ask you this: Who or what is your Goliath? Stop, and think about it before you read the next sentence.
After you have answered that question, ask yourself this next question; Who is the God I serve?
If your answer contains any of the following descriptions or characteristics, then you have nothing to worry about. God is greater, incredible, bigger and more than life, God of the impossible, omnipotent, omniscient, omnipresent, faithful, loving, provider, healer, deliverer, and so much more; then your worrying is needless. Get Him involved and watch Him take care of the giants.
Blessings!