Worry and faith are mutually exclusive. They cannot coexist. Faith in faith is not biblical faith. Faith in the Bible always has an object. We can trust God because he has given us a principle or promise.
Belief requires something concrete.
If we worry about any area of our lives, that area does not operate under faith in God's promises. In counter distinction to worry, pray about it. Pray about everything. Be anxious about nothing. Prayer is always a faith exercise.